🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 165 (from laksa136)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa165.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.hostinger.com/tutorials/http-status-codes\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.hostinger.com/tutorials/http-status-codes\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.hostinger.com\/tutorials\/http-status-codes","crawl_time":1775679208,"first_indexed_time":1636221265,"http_code":200,"src_unparsed":"com,hostinger!www,\/tutorials\/http-status-codes s443","src_root_hash":"5798784484440663965","history_drop_reason":null,"meta_title":"HTTP status codes: full list and explanations","meta_descriptions":["HTTP status codes indicate the status of a browser's request. Learn all 63 status codes here and their impact on SEO here."],"attrs_boilerpipe_text":"Oct 27, 2025\n\/\nJordana A.\n\/\n13min                                read\nHTTP response codes are three-digit numbers sent by a server to indicate the status of a browser’s request. Managed by the Internet Assigned Numbers Authority (IANA), these codes help identify whether a request was successful, redirected, or resulted in an error.\nIf you’re managing a website, understanding these codes is useful for diagnosing site issues, minimizing downtime, and optimizing SEO. Keep reading as we cover 63 HTTP status codes, their meanings, and how to monitor them.\nHTTP status code categories\nWhen identifying an HTTP status code, focus on the first digit to determine its category. The last two digits provide specific details within that category.\nThe\nInternet Engineering Task Force (IETF)\nstandardized HTTP status codes into five categories based on the server’s response to the browser:\n1XX (informational)\n– the server received the HTTP request and will continue the process. Status codes within this category are temporary, so they aren’t visible to the client.\n2XX (success)\n– the server received, understood, and processed the request.\n3XX (redirection)\n– the server received the request, but the requested content has moved. Therefore, it will redirect the client to another location.\n4XX (client error)\n– the server couldn’t complete the request because of a client-side issue, such as an authorization problem. The response explains whether the issue is temporary or permanent.\n5XX (server error)\n– a server-side issue prevents the request from being processed. Like 4XX, the response specifies if it’s a temporary or permanent issue.\nComplete list of HTTP status codes and explanation\nHere is the complete list of HTTP status codes from IEFT documentation:\nStatus codes\nFunctions\n1XX Informational\n100\nContinue\n101\nSwitching Protocols\n102\nProcessing\n103\nEarly Hints\n2XX Successful\n200\nOK\n201\nCreated\n202\nAccepted\n203\nNon-Authoritative Information\n204\nNo Content\n205\nReset Content\n206\nPartial Content\n207\nMulti-Status\n208\nAlready Reported\n226\nIM Used\n3XX Redirection\n300\nMultiple Choices\n301\nMoved Permanently\n302\nFound\n303\nSee Other\n304\nNot Modified\n307\nTemporary Redirect\n308\nPermanent Redirect\n4XX Client Error\n400\nBad Request\n401\nUnauthorized\n402\nPayment Required\n403\nForbidden\n404\nNot Found\n405\nMethod Not Allowed\n406\nNot Acceptable\n407\nProxy Authentication Required\n408\nRequest Timeout\n409\nConflict\n410\nGone\n411\nLength Required\n412\nPrecondition Failed\n413\nContent Too Large\n414\nURI Too Long\n415\nUnsupported Media Type\n416\nRange Not Satisfiable\n417\nExpectation Failed\n418\nI’m a Teapot\n421\nMisdirected Request\n422\nUnprocessable Entity\n423\nLocked\n424\nFailed Dependency\n425\nToo Early\n426\nUpgrade Required\n428\nPrecondition Required\n429\nToo Many Requests\n431\nRequest Header Fields Too Large\n451\nUnavailable for Legal Reasons\n5XX Server Error\n500\nInternal Server Error\n501\nNot Implemented\n502\nBad Gateway\n503\nService Unavailable\n504\nGateway Timeout\n505\nHTTP Version Not Supported\n506\nVariant Also Negotiates\n507\nInsufficient Storage\n508\nLoop Detected\n510\nNot Extended\n511\nNetwork Authentication Required\n305 Use Proxy\nand\n306 Switch Proxy\nhave been deprecated but are still reserved.\nAdditionally, codes outside these categories may be unofficial, not yet adopted, or specific to certain platforms or services. For example, Cloudflare uses the\n521 Web Server Is Down\nstatus code for connection errors.\n1XX – Informational HTTP status codes\n100 Continue\nThis status code indicates that the server has received the initial part of the request. The client should continue sending the rest of the request and ignore this status code.\n101 Switching Protocols\nThe server agrees to switch to the protocol specified in the\nUpgrade\nheader. This response only happens if the change is beneficial.\n102 Processing\nThe status code means that the server is still processing the request. It usually appears when a request takes a long time to complete.\n103 Early Hints\nThis response code allows the browser to preload resources using the\nLink\nheader while the server prepares the final response.\n2XX – Successful HTTP status codes\n200 OK\nThis status code indicates that the request has succeeded. However, the actual meaning of this response depends on the request method used (\nGET\n,\nHEAD\n,\nPOST\n,\nPUT\n,\nDELETE\n,\nOPTIONS\n, or\nTRACE\n). We’ll dive into all the HTTP methods later in the article.\n201 Created\nThis status code is a typical response sent after a\nPOST\nor\nPUT\nmethod. It indicates that the server has completed the request and is creating one or more new resources, identified by a\nLocation\nheader or the target URI.\n202 Accepted\nThe server has accepted the request but hasn’t processed it yet. This non-committal status allows the server to handle the request later without requiring the client to stay connected, making it ideal for batch processing.\n203 Non-Authoritative Information\nThis status code means the request was successful, but a proxy modified the response data from the origin server. It’s commonly used when the server retrieves data from a cache or third-party source, notifying recipients of potential changes to the original content, like in backups or mirrored resources.\n204 No Content\nThis status code means that the server successfully processed the request but has no content to send in the response. It’s used for actions that don’t require updating the browser’s current view.\n205 Reset Content\nThe request was successful, and the client should reset the document view ‒ a notepad, form, or canvas ‒ to its default state.\n206 Partial Content\nThis status code is sent when a client requests part of a resource using the\nRange\nheader, which reduces bandwidth usage and improves performance.\nIt commonly happens when resuming interrupted downloads, streaming media files, handling large file transfers in chunks, and fetching specific data segments during synchronization.\n207 Multi-Status\nThis status code provides the status of multiple resources in a single response. The XML message body typically includes a multi-status root element detailing each resource’s success, partial success, or failure.\n208 Already Reported\nThis status code is used inside a\nDAV:propstat\nresponse element to avoid listing duplicate internal members of collections. Only one resource reports a\n200 OK\nstatus, while duplicates use\n208\n.\n226 IM Used\nThe server successfully processed a\nGET\nrequest and applied one or more\ninstance manipulations\nto the resource in the response.\n3XX – Redirection HTTP status codes\n300 Multiple Choices\nThis status code indicates that multiple responses are available, and the client must choose one.\nFor example, it can happen when a resource has multiple language versions, such as English and French. The response includes a list of options with resource details and locations. If the server has a preferred choice, it provides a\nLocation\nheader for automatic redirection.\n301 Moved Permanently\nThis status code means the requested resource has been permanently moved to a new URL. All future requests should use the new address provided in the response.\nThe server’s response usually includes a link to the new URL, except for\nHEAD\nrequests. For methods other than\nGET\nand\nHEAD\n, redirection only happens if the client allows it.\n302 Found\nThis status code means that the requested resource is temporarily available at a different URI. Future requests should continue to use the original address unless otherwise directed.\nFor non-\nHEAD\nrequests, the server’s response usually includes a link to the temporary URI. Redirection only occurs if the client allows it.\nCheck out our\n302 error\ntutorial for troubleshooting methods and common use cases.\n303 See Other\nThis status code redirects the client to a different resource using the\nGET\nmethod. It means the server cannot provide the requested resource directly.\nFor example, after submitting a form, the server redirects the client to a confirmation page instead of showing the result directly.\n304 Not Modified\nThis status code means the requested resource hasn’t changed, so the client can use its cached version. It’s typically triggered by\nGET\nor\nHEAD\nrequests with conditional headers like\nIf-None-Match\nor\nIf-Modified-Since\n.\nCheck out our tutorial on the\n304 status code\nfor more details and troubleshooting steps.\n307 Temporary Redirect\nThe server sends this status code to redirect the client to another URI temporarily. Since it is temporary, the client may need to use the original address in the future. Unlike\n302 Found\n, the client must keep the same HTTP method during the redirect.\n308 Permanent Redirect\nThis status code indicates the resource has permanently moved to a new URI in the HTTP header.\nIt has the same semantics as\n301 Moved Permanently\n, except that\n308 Permanent Redirect\ndoesn’t allow the client to change the request method.\n4XX – Client error HTTP status codes\n400 Bad Request\nThis status code means the server couldn’t process the request due to a client-side error, like invalid syntax or routing. To fix a\n400 error\n, check the URL and clear your browser’s cache and cookies.\n401 Unauthorized\nThe server rejected the request due to missing or invalid user authentication. If the request included credentials, it indicates the server refused to authorize them. The response usually comes with a\nWWW-Authenticate\nheader containing instructions to access the resource.\nIf you come across a\n401 error\n, check out our dedicated tutorial for troubleshooting steps.\n402 Payment Required\nThis non-standard status code was intended for digital payment systems. However, it’s rarely used, and there are no clear rules for it.\n403 Forbidden\nThe server understood the request but denied access, usually due to insufficient permissions. Re-authentication won’t resolve a\n403 error\n, as access is permanently restricted. The client can try again with different credentials.\n404 Not Found\nThis status code means that the server can’t find the requested resource and has no forwarding address. In a browser, it means the link is missing or unrecognized. In an API, it indicates the endpoint exists, but the resource doesn’t.\nLinks that return a\n404 error\nare called broken or dead links, which can be temporary or permanent.\n405 Method Not Allowed\nThe origin server recognizes the request method, but the resource doesn’t support it. The response usually includes an\nAllow\nheader listing the supported methods.\nTo fix a\n405 error\n, check the URL and review any database changes.\n406 Not Acceptable\nThe server sends this invalid response when it doesn’t find any content that matches the criteria in the request’s\nAccept\nheaders. The server will provide a list of available options so the client can choose the most suitable one.\n407 Proxy Authentication Required\nThe server displays this code when using a proxy. The client must provide valid authentication credentials to access the requested resource. Unlike\n401 Unauthorized\n, the client must authenticate with the specified proxy server instead of the origin server.\n408 Request Timeout\nThis status code means the server didn’t receive the full request within the allowed time. The response usually suggests closing the unused connection.\nTo fix it, the client can resend the request without changes. This error can occur in browsers like Chrome and Firefox, which use pre-connection to speed up loading.\n409 Conflict\nThe server can’t process the request due to a conflict with the resource. It provides details about the issue so the client can fix it and try again, usually with a\nPUT\nrequest.\n410 Gone\nThis response code means the resource is permanently unavailable without any forwarding address. When this occurs, search engines will remove the page from their index. It shows the site owner intentionally made the resource unavailable and wants to remove any links to it.\n411 Length Required\nThe server rejected the request because it needs a\nContent-Length\nheader.\n412 Precondition Failed\nThis invalid response shows the server couldn’t meet one or more conditions specified in the request headers.\n413 Payload Too Large\nThe server usually sends this error code when a request is too large to process. To fix a\n413 error\n, the server might close the connection and include a\nRetry-After\nheader, encouraging the client to try again later.\n414 URI Too Long\nThis status code means the request URI is too long for the server to process. While it’s rare, it can happen if a client converts a\nPOST\nrequest into a\nGET\nrequest with too much query information, enters a redirection loop, or attempts to exploit server vulnerabilities.\n415 Unsupported Media Type\nThe server rejected the request because the resource uses an unsupported media format. This error code can also appear if the data compression method isn’t supported or if the content doesn’t meet the server’s expectations or rules.\n416 Range Not Satisfiable\nThe server sends this status code when it can’t process the range specified in the request. It happens when the range doesn’t exist in the resource or the value is invalid.\n417 Expectation Failed\nThis status means the server can’t meet the requirements specified in the request’s\nExpect\nheader.\n418 I’m a Teapot\nThis status code references an April Fools’ Day joke called the Hyper Text Coffee Pot Control Protocol, indicating that the server is a teapot and, therefore, can’t brew coffee. Some websites use it for requests they want to avoid.\n421 Misdirected Request\nThis status code happens when the client sends a request to the wrong server, which can’t respond to the given URL. The user can retry the request using a different connection or service.\n422 Unprocessable Entity\nThe server received the request but can’t process it due to issues like semantic errors, such as entering text in a form’s numeric field.\n423 Locked\nThis status means the resource is locked. The response often includes details about the lock.\n424 Failed Dependency\nThe request failed because it depended on a previous request that also failed.\n425 Too Early\nThe server refuses to process the request because it might be repeated later.\n426 Upgrade Required\nThe server won’t process the request unless the client switches to the required protocol stated in the\nUpgrade\nheader.\n428 Precondition Required\nThis status code means that the server needs a conditional request so that the client is using the correct version of the resource.\n429 Too Many Requests\nThe\n429 error\noccurs when the client sends too many requests in a short time. The server may include a\nRetry-After\nheader to tell the client how long to wait before trying again.\n431 Request Header Fields Too Large\nThe server sends this status code when the request headers are too big to process. The client should reduce the header size and resend the request.\n451 Unavailable for Legal Reasons\nThis response code occurs when the client requests a resource that has been removed due to legal reasons, such as a blocked site or page. This mostly affects Internet Service Providers (ISPs) and search engines.\n5XX – Server error HTTP status codes\n500 Internal Server Error\nThis generic error code appears when the server encounters an unexpected issue that prevents it from completing the request. In many cases, server administrators log detailed information about the problem for troubleshooting.\n501 Not Implemented\nThis status means the server doesn’t support the functionality needed to complete the request. Servers only need to handle\nGET\nand\nHEAD\nmethods by default.\nThe response can include a\nRetry-After\nheader, letting the client know when the functionality might be available.\n502 Bad Gateway\nThe gateway or proxy server gives this status code when it receives an invalid response while attempting to complete the request. If your site displays a\n502 error\n, you should contact your web host to fix it.\n503 Service Unavailable\nThis status means the server can’t handle the request due to temporary overload or maintenance. Check the response’s\nRetry-After\nheader to see how long you should wait before trying again.\n504 Gateway Timeout\nThe gateway or proxy server sends this status code when it doesn’t get a timely response from the upstream server. If the\n504 error\noccurs on your website, check your hosting resources or try using a different browser to solve it.\n505 HTTP Version Not Supported\nThe server sends this code when it doesn’t support the HTTP version used in the request. The response will explain why that version doesn’t work and offer acceptable protocols.\n506 Variant Also Negotiates\nThis status code indicates a server configuration error. It happens when the chosen resource variant is set up for\ncontent negotiation\nbut isn’t a valid endpoint, causing a loop.\n507 Insufficient Storage\nThe server doesn’t have enough storage to complete the request.\n508 Loop Detected\nThis status means the server stopped an operation because it detected an infinite loop, causing the process to fail.\n510 Not Extended\nThis status code means the server needs further extensions to complete the request successfully.\n511 Network Authentication Required\nThe client must authenticate itself to access the network. The response usually includes a link to submit credentials. It addresses security issues with captive portals or the web pages users see before accessing public Wi-Fi networks.\nUnderstanding HTTP request and response\nHTTP defines request methods to tell the server what action to take with a resource. These methods share common features: safe, idempotent, or cacheable.\nMethods are considered safe if they don’t modify anything on the server and work on a read-only basis. Idempotent methods give the same result no matter how often you run them without unintended side effects. Cacheable methods allow browsers or proxies to save responses for reuse, improving efficiency.\nHere’s a list of standardized request methods commonly used in HTTP:\nGET\n‒ retrieves data from a resource.\nHEAD\n‒ requests the same response as\nGET\nbut without a message body.\nPOST\n‒ sends data to a resource, like submitting a form.\nPUT\n‒ replaces a resource or its representation entirely.\nDELETE\n‒ removes a resource.\nOPTIONS\n‒ shows the communication options for the resource.\nTRACE\n‒ tests the path of a request.\nPATCH\n‒ updates part of a resource.\nThese request methods often connect with HTTP status codes, showing if the action succeeded or failed. For example, a\nGET\nrequest can return\n200 OK\nif it works or\n404 Not Found\nif the resource doesn’t exist.\nHow to check a page’s HTTP status code\nUsers rarely see status codes in the 1XX and 2XX categories. Instead, they usually encounter 3XX, 4XX, or 5XX status codes when something goes wrong.\nThe easiest way to check a page’s HTTP status codes is to use your browser’s\nInspect Element\ntool. If you’re on Chrome, right-click anywhere on the page and select\nInspect\n. Then, select\nNetwork\non the top menu.\nWith\nWebSniffer\n, you can check a page’s HTTP request headers by selecting the request type (\nGET\n,\nPOST\n, or\nHEAD\n) and client. This feature helps you see how the page loads on different browsers and even Googlebot.\nImportant HTTP status code for SEO\nSearch engine bots register all HTTP status codes while crawling your site and will use this information to determine its health and ranking. Let’s see some of the status codes that significantly impact your site’s SEO.\n200: OK\nThe\n200 OK\nstatus positively impacts SEO because it signals to search engines that the page is accessible and working properly for visitors. It confirms the page is indexed, ranks in search results, and provides a smooth user experience.\n301: Moved Permanently\nThe\n301 Moved Permanently\nstatus helps SEO by redirecting traffic from an old URL to a new one. It tells search engines the old page has moved, so they transfer its ranking and authority ‒ also known as\nlink equity\n‒ to the new page. This keeps your site’s SEO stable and avoids broken links.\nIf you own a WordPress website, check out our dedicated tutorial on\ncreating 301 redirects\n. As for best practices, make sure to:\nRedirect relevant pages\n‒ pick pages with similar content to maintain user experience and SEO value.\nUpdate internal links\n‒ replace old URLs with new ones in your site’s navigation, menus, and content so that visitors don’t come across broken links.\nCheck external links\n‒ ask other sites that link to your old URL to update their links if possible.\nMonitor redirects\n‒ test your redirects to avoid chains or loops, which can slow down your site and confuse search engines.\nInform search engines\n‒ submit an updated\nsitemap\nto inform search engines about the new URL structure.\n302: Found\nSince\n302 Found\nis a temporary redirect, search engines assume the original URL will return and often keep it indexed. Using it for a permanent move can hurt your SEO as it splits ranking and authority between the old and new URLs.\nTherefore, only allow this status code for temporary situations, like during maintenance or testing. Replace it with\n301\nthe moment the change becomes permanent.\n404: Not Found\nThe 404 Not Found response is bad news for SEO and user experience. Search engines might remove\n404\npages from their index, which means lost traffic. If the page has backlinks, you could lose valuable SEO benefits. It can also frustrate visitors, causing them to leave and mistrust your site.\nImmediately fixing the error code is the best way to minimize the damage. It’s also a great practice to create a custom\n404\nerror page, which you can populate with navigation links or information to keep visitors engaged.\nHostinger users can set up custom error pages in hPanel by going to\nWebsite\n→\nError Pages\n. Alternatively, use WordPress plugins like\nSeedProd\nor\nSmart Custom 404 Error Page\nto get the job done without coding.\nMore importantly, regularly scan your website for\n404\nerrors using Hostinger’s built-in\nAI Troubleshooter\nor third-party tools like\nGoogle Search Console\n.\nDid you know?\nAvailable for Hostinger’s Managed WordPress Hosting users, AI Troubleshooter automatically detects and fixes common errors affecting the website, including\n404\n.\n410: Gone\nThe\n410 Gone\nstatus code can benefit your SEO when used on permanently removed pages. It’s more effective than\n404 Not Found\nbecause it clearly tells search engines to remove the page from their index.\nHowever, using it on pages with valuable backlinks or significant traffic can result in lost link equity and SEO value. It can also confuse users if there’s no clear alternative to the page.\nOnly use 410 for pages you want to remove permanently and don’t plan to replace. Better yet, redirect visitors and search engines to another relevant page using a\n301\n.\n500: Internal Server Error\nThis status code can make it harder for search engines to crawl your site, leading to missed opportunities and unindexed pages. If the error lasts too long, search engines might view your site as unreliable, potentially affecting your rankings.\nFor WordPress sites, bad plugins and a corrupted\n.htaccess file\nare common causes of a 500 Internal Server Error. Check out our tutorial on\nfixing the 500 HTTP error\nfor troubleshooting steps and contact your hosting provider if the error persists.\n503: Service Unavailable\nThe\n503 Service Unavailable\nerror means the server is temporarily down, usually due to maintenance or overload. Unlike the\n500\nerror, it’s usually planned.\nWhile short-term\n503\nerrors won’t hurt your SEO much, leaving them unresolved for too long can lead to lost traffic, higher bounce rates, and lower rankings.\nTo fix it, finish up your maintenance or reduce the server load. You can also try other troubleshooting methods in our\n503 Service Unavailable\ntutorial. If nothing works, check with your hosting provider to see if the problem is from their end.\nHTTP status codes FAQ\nHow many HTTP status codes are there?\nThe\nIANA registry\nlists status codes from\n100\nto\n599\n. Only 63 are standardized and widely used, while the rest are unassigned.\nShould I check my site for HTTP status code errors?\nAbsolutely! Checking for and solving HTTP status code errors helps improve your site’s performance and user experience and protects your search rankings.\nHow do I fix 4XX and 5XX HTTP status code errors?\nSince 4XX errors come from the client side, check for URL typos or update permissions to resolve them. For 5XX server errors, review your server settings, logs, and resources. Contact your hosting provider if needed.\nAll of the tutorial content on this website is subject to\nHostinger's rigorous editorial standards and values.\nJordana is a Senior Content Writer with a background in Information Systems. She has over five years of experience in WordPress and is casually dabbling with PHP and MySQL. Her passion for writing and technology drives her to create tutorials for anyone wanting to build their online presence. 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Managed by the Internet Assigned Numbers Authority (IANA), these codes help identify whether a request was successful, redirected, or resulted in an error.\n\nIf you’re managing a website, understanding these codes is useful for diagnosing site issues, minimizing downtime, and optimizing SEO. Keep reading as we cover 63 HTTP status codes, their meanings, and how to monitor them.\n\n## HTTP status code categories\nWhen identifying an HTTP status code, focus on the first digit to determine its category. The last two digits provide specific details within that category.\n\nThe [Internet Engineering Task Force (IETF)](https:\/\/www.ietf.org\/) standardized HTTP status codes into five categories based on the server’s response to the browser:\n\n- **1XX (informational)** – the server received the HTTP request and will continue the process. Status codes within this category are temporary, so they aren’t visible to the client.\n- **2XX (success)** – the server received, understood, and processed the request.\n- **3XX (redirection)** – the server received the request, but the requested content has moved. Therefore, it will redirect the client to another location.\n- **4XX (client error)** – the server couldn’t complete the request because of a client-side issue, such as an authorization problem. The response explains whether the issue is temporary or permanent.\n- **5XX (server error)** – a server-side issue prevents the request from being processed. Like 4XX, the response specifies if it’s a temporary or permanent issue.\n## Complete list of HTTP status codes and explanation\nHere is the complete list of HTTP status codes from IEFT documentation:\n\n|   |   |\n|---|---|\n| **Status codes** | **Functions** |\n| [1XX Informational](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=1XX%20%E2%80%93%20Informational%20HTTP%20status%20codes) |   |\n| 100 | Continue |\n| 101 | Switching Protocols |\n| 102 | Processing |\n| 103 | Early Hints |\n| [2XX Successful](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=2XX%20%E2%80%93%20Successful%20HTTP%20status%20codes) |   |\n| 200 | OK |\n| 201 | Created |\n| 202 | Accepted |\n| 203 | Non-Authoritative Information |\n| 204 | No Content |\n| 205 | Reset Content |\n| 206 | Partial Content |\n| 207 | Multi-Status |\n| 208 | Already Reported |\n| 226 | IM Used |\n| [3XX Redirection](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=3XX%20%E2%80%93%20Redirection%20HTTP%20status%20codes) |   |\n| 300 | Multiple Choices |\n| 301 | Moved Permanently |\n| 302 | Found |\n| 303 | See Other |\n| 304 | Not Modified |\n| 307 | Temporary Redirect |\n| 308 | Permanent Redirect |\n| [4XX Client Error](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=4XX%20%E2%80%93%20Client%20error%20HTTP%20status%20codes) |   |\n| 400 | Bad Request |\n| 401 | Unauthorized |\n| 402 | Payment Required |\n| 403 | Forbidden |\n| 404 | Not Found |\n| 405 | Method Not Allowed |\n| 406 | Not Acceptable |\n| 407 | Proxy Authentication Required |\n| 408 | Request Timeout |\n| 409 | Conflict |\n| 410 | Gone |\n| 411 | Length Required |\n| 412 | Precondition Failed |\n| 413 | Content Too Large |\n| 414 | URI Too Long |\n| 415 | Unsupported Media Type |\n| 416 | Range Not Satisfiable |\n| 417 | Expectation Failed |\n| 418 | I’m a Teapot |\n| 421 | Misdirected Request |\n| 422 | Unprocessable Entity |\n| 423 | Locked |\n| 424 | Failed Dependency |\n| 425 | Too Early |\n| 426 | Upgrade Required |\n| 428 | Precondition Required |\n| 429 | Too Many Requests |\n| 431 | Request Header Fields Too Large |\n| 451 | Unavailable for Legal Reasons |\n| [5XX Server Error](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=5XX%20%E2%80%93%20Server%20error%20HTTP%20status%20codes) |   |\n| 500 | Internal Server Error |\n| 501 | Not Implemented |\n| 502 | Bad Gateway |\n| 503 | Service Unavailable |\n| 504 | Gateway Timeout |\n| 505 | HTTP Version Not Supported |\n| 506 | Variant Also Negotiates |\n| 507 | Insufficient Storage |\n| 508 | Loop Detected |\n| 510 | Not Extended |\n| 511 | Network Authentication Required |\n\n**305 Use Proxy** and **306 Switch Proxy** have been deprecated but are still reserved.\n\nAdditionally, codes outside these categories may be unofficial, not yet adopted, or specific to certain platforms or services. For example, Cloudflare uses the [521 Web Server Is Down](https:\/\/www.hostinger.com\/tutorials\/error-521) status code for connection errors.\n\n### 1XX – Informational HTTP status codes\n**100 Continue**This status code indicates that the server has received the initial part of the request. The client should continue sending the rest of the request and ignore this status code.\n\n**101 Switching Protocols**The server agrees to switch to the protocol specified in the **Upgrade** header. This response only happens if the change is beneficial.\n\n**102 Processing**The status code means that the server is still processing the request. It usually appears when a request takes a long time to complete.\n\n**103 Early Hints**This response code allows the browser to preload resources using the **Link** header while the server prepares the final response.\n\n### 2XX – Successful HTTP status codes\n**200 OK**\n\nThis status code indicates that the request has succeeded. However, the actual meaning of this response depends on the request method used (**GET**, **HEAD**, **POST**, **PUT**, **DELETE**, **OPTIONS**, or **TRACE**). We’ll dive into all the HTTP methods later in the article.\n\n**201 Created**\n\nThis status code is a typical response sent after a **POST** or **PUT** method. It indicates that the server has completed the request and is creating one or more new resources, identified by a **Location** header or the target URI.\n\n**202 Accepted**\n\nThe server has accepted the request but hasn’t processed it yet. This non-committal status allows the server to handle the request later without requiring the client to stay connected, making it ideal for batch processing.\n\n**203 Non-Authoritative Information**\n\nThis status code means the request was successful, but a proxy modified the response data from the origin server. It’s commonly used when the server retrieves data from a cache or third-party source, notifying recipients of potential changes to the original content, like in backups or mirrored resources.\n\n**204 No Content**\n\nThis status code means that the server successfully processed the request but has no content to send in the response. It’s used for actions that don’t require updating the browser’s current view.\n\n**205 Reset Content**\n\nThe request was successful, and the client should reset the document view ‒ a notepad, form, or canvas ‒ to its default state.\n\n**206 Partial Content**This status code is sent when a client requests part of a resource using the **Range** header, which reduces bandwidth usage and improves performance.\n\nIt commonly happens when resuming interrupted downloads, streaming media files, handling large file transfers in chunks, and fetching specific data segments during synchronization.\n\n**207 Multi-Status**\n\nThis status code provides the status of multiple resources in a single response. The XML message body typically includes a multi-status root element detailing each resource’s success, partial success, or failure.\n\n**208 Already Reported**\n\nThis status code is used inside a [DAV:propstat](http:\/\/webdav.org\/specs\/rfc2518.html) response element to avoid listing duplicate internal members of collections. Only one resource reports a **200 OK** status, while duplicates use **208**.\n\n**226 IM Used**\n\nThe server successfully processed a **GET** request and applied one or more [instance manipulations](https:\/\/www.iana.org\/assignments\/inst-man-values\/inst-man-values.xhtml) to the resource in the response.\n\n### 3XX – Redirection HTTP status codes\n**300 Multiple Choices**\n\nThis status code indicates that multiple responses are available, and the client must choose one.\n\nFor example, it can happen when a resource has multiple language versions, such as English and French. The response includes a list of options with resource details and locations. If the server has a preferred choice, it provides a **Location** header for automatic redirection.\n\n**301 Moved Permanently**\n\nThis status code means the requested resource has been permanently moved to a new URL. All future requests should use the new address provided in the response.\n\nThe server’s response usually includes a link to the new URL, except for **HEAD** requests. For methods other than **GET** and **HEAD**, redirection only happens if the client allows it.\n\n**302 Found**\n\nThis status code means that the requested resource is temporarily available at a different URI. Future requests should continue to use the original address unless otherwise directed.\n\nFor non-**HEAD** requests, the server’s response usually includes a link to the temporary URI. Redirection only occurs if the client allows it.\n\nCheck out our [302 error](https:\/\/www.hostinger.com\/tutorials\/302-found-error) tutorial for troubleshooting methods and common use cases.\n\n**303 See Other**\n\nThis status code redirects the client to a different resource using the **GET** method. It means the server cannot provide the requested resource directly.\n\nFor example, after submitting a form, the server redirects the client to a confirmation page instead of showing the result directly.\n\n**304 Not Modified**\n\nThis status code means the requested resource hasn’t changed, so the client can use its cached version. It’s typically triggered by **GET** or **HEAD** requests with conditional headers like **If-None-Match** or **If-Modified-Since**.\n\nCheck out our tutorial on the [304 status code](https:\/\/www.hostinger.com\/tutorials\/304-status-code) for more details and troubleshooting steps.\n\n**307 Temporary Redirect**\n\nThe server sends this status code to redirect the client to another URI temporarily. Since it is temporary, the client may need to use the original address in the future. Unlike **302 Found**, the client must keep the same HTTP method during the redirect.\n\n**308 Permanent Redirect**\n\nThis status code indicates the resource has permanently moved to a new URI in the HTTP header.\n\nIt has the same semantics as **301 Moved Permanently**, except that **308 Permanent Redirect** doesn’t allow the client to change the request method.\n\n### 4XX – Client error HTTP status codes\n**400 Bad Request**\n\nThis status code means the server couldn’t process the request due to a client-side error, like invalid syntax or routing. To fix a [400 error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-400-bad-request-error), check the URL and clear your browser’s cache and cookies.\n\n**401 Unauthorized**\n\nThe server rejected the request due to missing or invalid user authentication. If the request included credentials, it indicates the server refused to authorize them. The response usually comes with a **WWW-Authenticate** header containing instructions to access the resource.\n\nIf you come across a [401 error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-the-401-unauthorized-error), check out our dedicated tutorial for troubleshooting steps.\n\n**402 Payment Required**\n\nThis non-standard status code was intended for digital payment systems. However, it’s rarely used, and there are no clear rules for it.\n\n**403 Forbidden**\n\nThe server understood the request but denied access, usually due to insufficient permissions. Re-authentication won’t resolve a [403 error](https:\/\/www.hostinger.com\/tutorials\/what-is-403-forbidden-error-and-how-to-fix-it), as access is permanently restricted. The client can try again with different credentials.\n\n**404 Not Found**\n\nThis status code means that the server can’t find the requested resource and has no forwarding address. In a browser, it means the link is missing or unrecognized. In an API, it indicates the endpoint exists, but the resource doesn’t.\n\nLinks that return a [404 error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-error-404) are called broken or dead links, which can be temporary or permanent.\n\n**405 Method Not Allowed**\n\nThe origin server recognizes the request method, but the resource doesn’t support it. The response usually includes an **Allow** header listing the supported methods.\n\nTo fix a [405 error](https:\/\/www.hostinger.com\/tutorials\/error-405-method-not-allowed), check the URL and review any database changes.\n\n**406 Not Acceptable**\n\nThe server sends this invalid response when it doesn’t find any content that matches the criteria in the request’s **Accept** headers. The server will provide a list of available options so the client can choose the most suitable one.\n\n**407 Proxy Authentication Required**\n\nThe server displays this code when using a proxy. The client must provide valid authentication credentials to access the requested resource. Unlike **401 Unauthorized**, the client must authenticate with the specified proxy server instead of the origin server.\n\n**408 Request Timeout**This status code means the server didn’t receive the full request within the allowed time. The response usually suggests closing the unused connection.\n\nTo fix it, the client can resend the request without changes. This error can occur in browsers like Chrome and Firefox, which use pre-connection to speed up loading.\n\n**409 Conflict**\n\nThe server can’t process the request due to a conflict with the resource. It provides details about the issue so the client can fix it and try again, usually with a **PUT** request.\n\n**410 Gone**This response code means the resource is permanently unavailable without any forwarding address. When this occurs, search engines will remove the page from their index. It shows the site owner intentionally made the resource unavailable and wants to remove any links to it.\n\n**411 Length Required**\n\nThe server rejected the request because it needs a **Content-Length** header.\n\n**412 Precondition Failed**\n\nThis invalid response shows the server couldn’t meet one or more conditions specified in the request headers.\n\n**413 Payload Too Large**\n\nThe server usually sends this error code when a request is too large to process. To fix a [413 error](https:\/\/www.hostinger.com\/tutorials\/413-request-entity-too-large-error), the server might close the connection and include a **Retry-After** header, encouraging the client to try again later.\n\n**414 URI Too Long**\n\nThis status code means the request URI is too long for the server to process. While it’s rare, it can happen if a client converts a **POST** request into a **GET** request with too much query information, enters a redirection loop, or attempts to exploit server vulnerabilities.\n\n**415 Unsupported Media Type**\n\nThe server rejected the request because the resource uses an unsupported media format. This error code can also appear if the data compression method isn’t supported or if the content doesn’t meet the server’s expectations or rules.\n\n**416 Range Not Satisfiable**\n\nThe server sends this status code when it can’t process the range specified in the request. It happens when the range doesn’t exist in the resource or the value is invalid.\n\n**417 Expectation Failed**This status means the server can’t meet the requirements specified in the request’s **Expect** header.\n\n**418 I’m a Teapot**\n\nThis status code references an April Fools’ Day joke called the Hyper Text Coffee Pot Control Protocol, indicating that the server is a teapot and, therefore, can’t brew coffee. Some websites use it for requests they want to avoid.\n\n**421 Misdirected Request**\n\nThis status code happens when the client sends a request to the wrong server, which can’t respond to the given URL. The user can retry the request using a different connection or service.\n\n**422 Unprocessable Entity**\n\nThe server received the request but can’t process it due to issues like semantic errors, such as entering text in a form’s numeric field.\n\n**423 Locked**\n\nThis status means the resource is locked. The response often includes details about the lock.\n\n**424 Failed Dependency**\n\nThe request failed because it depended on a previous request that also failed.\n\n**425 Too Early**\n\nThe server refuses to process the request because it might be repeated later.\n\n**426 Upgrade Required**\n\nThe server won’t process the request unless the client switches to the required protocol stated in the **Upgrade** header.\n\n**428 Precondition Required**\n\nThis status code means that the server needs a conditional request so that the client is using the correct version of the resource.\n\n**429 Too Many Requests**\n\nThe [429 error](https:\/\/www.hostinger.com\/tutorials\/429-too-many-requests-error) occurs when the client sends too many requests in a short time. The server may include a **Retry-After** header to tell the client how long to wait before trying again.\n\n**431 Request Header Fields Too Large**\n\nThe server sends this status code when the request headers are too big to process. The client should reduce the header size and resend the request.\n\n**451 Unavailable for Legal Reasons**\n\nThis response code occurs when the client requests a resource that has been removed due to legal reasons, such as a blocked site or page. This mostly affects Internet Service Providers (ISPs) and search engines.\n\n### 5XX – Server error HTTP status codes\n**500 Internal Server Error**\n\nThis generic error code appears when the server encounters an unexpected issue that prevents it from completing the request. In many cases, server administrators log detailed information about the problem for troubleshooting.\n\n**501 Not Implemented**\n\nThis status means the server doesn’t support the functionality needed to complete the request. Servers only need to handle **GET** and **HEAD** methods by default.\n\nThe response can include a **Retry-After** header, letting the client know when the functionality might be available.\n\n**502 Bad Gateway**\n\nThe gateway or proxy server gives this status code when it receives an invalid response while attempting to complete the request. If your site displays a [502 error](https:\/\/www.hostinger.com\/tutorials\/502-bad-gateway), you should contact your web host to fix it.\n\n**503 Service Unavailable**\n\nThis status means the server can’t handle the request due to temporary overload or maintenance. Check the response’s **Retry-After** header to see how long you should wait before trying again.\n\n**504 Gateway Timeout**\n\nThe gateway or proxy server sends this status code when it doesn’t get a timely response from the upstream server. If the [504 error](https:\/\/www.hostinger.com\/tutorials\/504-gateway-timeout) occurs on your website, check your hosting resources or try using a different browser to solve it.\n\n**505 HTTP Version Not Supported**\n\nThe server sends this code when it doesn’t support the HTTP version used in the request. The response will explain why that version doesn’t work and offer acceptable protocols.\n\n**506 Variant Also Negotiates**\n\nThis status code indicates a server configuration error. It happens when the chosen resource variant is set up for [content negotiation](https:\/\/www.javatpoint.com\/http-content-negotiation) but isn’t a valid endpoint, causing a loop.\n\n**507 Insufficient Storage**\n\nThe server doesn’t have enough storage to complete the request.\n\n**508 Loop Detected**\n\nThis status means the server stopped an operation because it detected an infinite loop, causing the process to fail.\n\n**510 Not Extended**\n\nThis status code means the server needs further extensions to complete the request successfully.\n\n**511 Network Authentication Required**\n\nThe client must authenticate itself to access the network. The response usually includes a link to submit credentials. It addresses security issues with captive portals or the web pages users see before accessing public Wi-Fi networks.\n\n## Understanding HTTP request and response\nHTTP defines request methods to tell the server what action to take with a resource. These methods share common features: safe, idempotent, or cacheable.\n\nMethods are considered safe if they don’t modify anything on the server and work on a read-only basis. Idempotent methods give the same result no matter how often you run them without unintended side effects. Cacheable methods allow browsers or proxies to save responses for reuse, improving efficiency.\n\nHere’s a list of standardized request methods commonly used in HTTP:\n\n- **GET** ‒ retrieves data from a resource.\n- **HEAD** ‒ requests the same response as **GET** but without a message body.\n- **POST** ‒ sends data to a resource, like submitting a form.\n- **PUT** ‒ replaces a resource or its representation entirely.\n- **DELETE** ‒ removes a resource.\n- **OPTIONS** ‒ shows the communication options for the resource.\n- **TRACE** ‒ tests the path of a request.\n- **PATCH** ‒ updates part of a resource.\n\nThese request methods often connect with HTTP status codes, showing if the action succeeded or failed. For example, a **GET** request can return **200 OK** if it works or **404 Not Found** if the resource doesn’t exist.\n\n## How to check a page’s HTTP status code\nUsers rarely see status codes in the 1XX and 2XX categories. Instead, they usually encounter 3XX, 4XX, or 5XX status codes when something goes wrong.\n\nThe easiest way to check a page’s HTTP status codes is to use your browser’s [Inspect Element](https:\/\/www.hostinger.com\/tutorials\/website\/how-to-inspect-and-change-style-using-google-chrome) tool. If you’re on Chrome, right-click anywhere on the page and select **Inspect**. Then, select **Network** on the top menu.\n\n![Chrome's Inspect Element, highlighting a page's HTTP status codes in the Network tab ](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2021\/11\/chrome-inspect-element.png\/public)\n\nWith [WebSniffer](https:\/\/websniffer.cc\/), you can check a page’s HTTP request headers by selecting the request type (**GET**, **POST**, or **HEAD**) and client. This feature helps you see how the page loads on different browsers and even Googlebot.\n\n![A page's HTTP response header shown in Websniffer ](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2021\/11\/websniffer.png\/public)\n\n## Important HTTP status code for SEO\nSearch engine bots register all HTTP status codes while crawling your site and will use this information to determine its health and ranking. Let’s see some of the status codes that significantly impact your site’s SEO.\n\n### 200: OK\nThe **200 OK** status positively impacts SEO because it signals to search engines that the page is accessible and working properly for visitors. It confirms the page is indexed, ranks in search results, and provides a smooth user experience.\n\n### 301: Moved Permanently\nThe **301 Moved Permanently** status helps SEO by redirecting traffic from an old URL to a new one. It tells search engines the old page has moved, so they transfer its ranking and authority ‒ also known as [link equity](https:\/\/ahrefs.com\/seo\/glossary\/link-equity) ‒ to the new page. This keeps your site’s SEO stable and avoids broken links.\n\nIf you own a WordPress website, check out our dedicated tutorial on [creating 301 redirects](https:\/\/www.hostinger.com\/tutorials\/301-redirects-in-wordpress). As for best practices, make sure to:\n\n- **Redirect relevant pages** ‒ pick pages with similar content to maintain user experience and SEO value.\n- **Update internal links** ‒ replace old URLs with new ones in your site’s navigation, menus, and content so that visitors don’t come across broken links.\n- **Check external links** ‒ ask other sites that link to your old URL to update their links if possible.\n- **Monitor redirects** ‒ test your redirects to avoid chains or loops, which can slow down your site and confuse search engines.\n- **Inform search engines** ‒ submit an updated [sitemap](https:\/\/www.hostinger.com\/tutorials\/what-is-a-sitemap) to inform search engines about the new URL structure.\n\n#### Did you know?\nHostinger’s [Managed WordPress hosting](https:\/\/www.hostinger.com\/wordpress-hosting) lets you set up multiple redirects using hPanel in just a few clicks.\n### 302: Found\nSince **302 Found** is a temporary redirect, search engines assume the original URL will return and often keep it indexed. Using it for a permanent move can hurt your SEO as it splits ranking and authority between the old and new URLs.\n\nTherefore, only allow this status code for temporary situations, like during maintenance or testing. Replace it with **301** the moment the change becomes permanent.\n\n### 404: Not Found\nThe 404 Not Found response is bad news for SEO and user experience. Search engines might remove **404** pages from their index, which means lost traffic. If the page has backlinks, you could lose valuable SEO benefits. It can also frustrate visitors, causing them to leave and mistrust your site.\n\nImmediately fixing the error code is the best way to minimize the damage. It’s also a great practice to create a custom **404** error page, which you can populate with navigation links or information to keep visitors engaged.\n\nHostinger users can set up custom error pages in hPanel by going to **Website** → **Error Pages**. Alternatively, use WordPress plugins like **SeedProd** or **Smart Custom 404 Error Page** to get the job done without coding.\n\nMore importantly, regularly scan your website for **404** errors using Hostinger’s built-in [AI Troubleshooter](https:\/\/www.hostinger.com\/blog\/wordpress-ai-troubleshooter) or third-party tools like **Google Search Console**.\n\n#### Did you know?\nAvailable for Hostinger’s Managed WordPress Hosting users, AI Troubleshooter automatically detects and fixes common errors affecting the website, including **404**.\n### 410: Gone\nThe **410 Gone** status code can benefit your SEO when used on permanently removed pages. It’s more effective than **404 Not Found** because it clearly tells search engines to remove the page from their index.\n\nHowever, using it on pages with valuable backlinks or significant traffic can result in lost link equity and SEO value. It can also confuse users if there’s no clear alternative to the page.\n\nOnly use 410 for pages you want to remove permanently and don’t plan to replace. Better yet, redirect visitors and search engines to another relevant page using a **301**.\n\n### 500: Internal Server Error\nThis status code can make it harder for search engines to crawl your site, leading to missed opportunities and unindexed pages. If the error lasts too long, search engines might view your site as unreliable, potentially affecting your rankings.\n\nFor WordPress sites, bad plugins and a corrupted [.htaccess file](https:\/\/www.hostinger.com\/tutorials\/locate-and-create-htaccess) are common causes of a 500 Internal Server Error. Check out our tutorial on [fixing the 500 HTTP error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-500-internal-server-error-in-wordpress) for troubleshooting steps and contact your hosting provider if the error persists.\n\n### 503: Service Unavailable\nThe **503 Service Unavailable** error means the server is temporarily down, usually due to maintenance or overload. Unlike the **500** error, it’s usually planned.\n\nWhile short-term **503** errors won’t hurt your SEO much, leaving them unresolved for too long can lead to lost traffic, higher bounce rates, and lower rankings.\n\nTo fix it, finish up your maintenance or reduce the server load. You can also try other troubleshooting methods in our [503 Service Unavailable](https:\/\/www.hostinger.com\/tutorials\/503-service-unavailable) tutorial. If nothing works, check with your hosting provider to see if the problem is from their end.\n\n## HTTP status codes FAQ\n### How many HTTP status codes are there?\nThe [IANA registry](https:\/\/www.iana.org\/assignments\/http-status-codes\/http-status-codes.xhtml) lists status codes from **100** to **599**. Only 63 are standardized and widely used, while the rest are unassigned.\n\n### Should I check my site for HTTP status code errors?\nAbsolutely! Checking for and solving HTTP status code errors helps improve your site’s performance and user experience and protects your search rankings.\n\n### How do I fix 4XX and 5XX HTTP status code errors?\nSince 4XX errors come from the client side, check for URL typos or update permissions to resolve them. For 5XX server errors, review your server settings, logs, and resources. Contact your hosting provider if needed.\n\n**All of the tutorial content on this website is subject to  [Hostinger's rigorous editorial standards and values.](https:\/\/www.hostinger.com\/tutorials\/editorial-standards-and-values)**\n\n![Author](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2025\/08\/jojo-profile.jpeg\/w=96,h=96,fit=scale-down)\n\nThe author\n\nJordana Alexandrea\n\nJordana is a Senior Content Writer with a background in Information Systems. She has over five years of experience in WordPress and is casually dabbling with PHP and MySQL. Her passion for writing and technology drives her to create tutorials for anyone wanting to build their online presence. Follow her on [LinkedIn](https:\/\/www.linkedin.com\/in\/jordana-alexandrea\/).\n\n[More from Jordana Alexandrea](https:\/\/www.hostinger.com\/tutorials\/author\/jordana)\n\n## Related tutorials\n[![Top 10 best European hosting providers: Key features and pricing](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2026\/03\/Tutorial-Cover-Hosting-performance-1-1.jpeg-1.jpeg\/w=1024,h=1024,fit=scale-down)](https:\/\/www.hostinger.com\/tutorials\/best-european-hosting-providers)\n\n31 Mar •  [Hosting](https:\/\/www.hostinger.com\/tutorials\/hosting)  •\n\n##### [Top 10 best European hosting providers: Key features and pricing](https:\/\/www.hostinger.com\/tutorials\/best-european-hosting-providers)\nChoosing the best European hosting provider isn’t just about uptime – it’s about where your data is stored and how ...\n\n[By Alma Fernando](https:\/\/www.hostinger.com\/tutorials\/author\/almafernando)\n\n[![What are server performance metrics? 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Definition, components, types, and how it works](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2026\/03\/database-tutorials.jpg\/w=1024,h=1024,fit=scale-down)](https:\/\/www.hostinger.com\/tutorials\/what-is-a-database)\n\n23 Mar •  [Hosting](https:\/\/www.hostinger.com\/tutorials\/hosting)  •  [Technical aspects](https:\/\/www.hostinger.com\/tutorials\/hosting\/technical-aspects)  •\n\n##### [What is a database? Definition, components, types, and how it works](https:\/\/www.hostinger.com\/tutorials\/what-is-a-database)\nA database is an organized electronic collection of data designed for fast storage, data retrieval, and management. 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Please try again later.\n\nRestart Conversation\n\nKodee can make mistakes. Double-check replies.\n\nAsk Kodee\n\n#### We Care About Your Privacy\nWe use cookies, to ensure that we give you the best experience on our website, to enable essential services and functionality on our site and to collect data on how visitors interact with our site and services. By clicking Accept, you agree to our use of all the cookies for advertising, analytics and support. For more information, please read our [Cookie Policy](https:\/\/www.hostinger.com\/legal\/cookie-policy).\n\nDecline\n\nSettings\n\nAccept\n\n![]()\n\n![]()","attrs_readable_markdown":"Oct 27, 2025\n\n\/\n\nJordana A.\n\n\/\n\n13min read\n\n![HTTP status codes: full list and explanations](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2021\/11\/how-to-fix-error-404-2.png\/w=1110,h=454,fit=scale-down)\n\nHTTP response codes are three-digit numbers sent by a server to indicate the status of a browser’s request. Managed by the Internet Assigned Numbers Authority (IANA), these codes help identify whether a request was successful, redirected, or resulted in an error.\n\nIf you’re managing a website, understanding these codes is useful for diagnosing site issues, minimizing downtime, and optimizing SEO. Keep reading as we cover 63 HTTP status codes, their meanings, and how to monitor them.\n\n## HTTP status code categories\nWhen identifying an HTTP status code, focus on the first digit to determine its category. The last two digits provide specific details within that category.\n\nThe [Internet Engineering Task Force (IETF)](https:\/\/www.ietf.org\/) standardized HTTP status codes into five categories based on the server’s response to the browser:\n\n- **1XX (informational)** – the server received the HTTP request and will continue the process. Status codes within this category are temporary, so they aren’t visible to the client.\n- **2XX (success)** – the server received, understood, and processed the request.\n- **3XX (redirection)** – the server received the request, but the requested content has moved. Therefore, it will redirect the client to another location.\n- **4XX (client error)** – the server couldn’t complete the request because of a client-side issue, such as an authorization problem. The response explains whether the issue is temporary or permanent.\n- **5XX (server error)** – a server-side issue prevents the request from being processed. Like 4XX, the response specifies if it’s a temporary or permanent issue.\n## Complete list of HTTP status codes and explanation\nHere is the complete list of HTTP status codes from IEFT documentation:\n\n|   |   |\n|---|---|\n| **Status codes** | **Functions** |\n| [1XX Informational](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=1XX%20%E2%80%93%20Informational%20HTTP%20status%20codes) |   |\n| 100 | Continue |\n| 101 | Switching Protocols |\n| 102 | Processing |\n| 103 | Early Hints |\n| [2XX Successful](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=2XX%20%E2%80%93%20Successful%20HTTP%20status%20codes) |   |\n| 200 | OK |\n| 201 | Created |\n| 202 | Accepted |\n| 203 | Non-Authoritative Information |\n| 204 | No Content |\n| 205 | Reset Content |\n| 206 | Partial Content |\n| 207 | Multi-Status |\n| 208 | Already Reported |\n| 226 | IM Used |\n| [3XX Redirection](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=3XX%20%E2%80%93%20Redirection%20HTTP%20status%20codes) |   |\n| 300 | Multiple Choices |\n| 301 | Moved Permanently |\n| 302 | Found |\n| 303 | See Other |\n| 304 | Not Modified |\n| 307 | Temporary Redirect |\n| 308 | Permanent Redirect |\n| [4XX Client Error](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=4XX%20%E2%80%93%20Client%20error%20HTTP%20status%20codes) |   |\n| 400 | Bad Request |\n| 401 | Unauthorized |\n| 402 | Payment Required |\n| 403 | Forbidden |\n| 404 | Not Found |\n| 405 | Method Not Allowed |\n| 406 | Not Acceptable |\n| 407 | Proxy Authentication Required |\n| 408 | Request Timeout |\n| 409 | Conflict |\n| 410 | Gone |\n| 411 | Length Required |\n| 412 | Precondition Failed |\n| 413 | Content Too Large |\n| 414 | URI Too Long |\n| 415 | Unsupported Media Type |\n| 416 | Range Not Satisfiable |\n| 417 | Expectation Failed |\n| 418 | I’m a Teapot |\n| 421 | Misdirected Request |\n| 422 | Unprocessable Entity |\n| 423 | Locked |\n| 424 | Failed Dependency |\n| 425 | Too Early |\n| 426 | Upgrade Required |\n| 428 | Precondition Required |\n| 429 | Too Many Requests |\n| 431 | Request Header Fields Too Large |\n| 451 | Unavailable for Legal Reasons |\n| [5XX Server Error](https:\/\/www.hostinger.com\/tutorials\/http-status-codes#:~:text=5XX%20%E2%80%93%20Server%20error%20HTTP%20status%20codes) |   |\n| 500 | Internal Server Error |\n| 501 | Not Implemented |\n| 502 | Bad Gateway |\n| 503 | Service Unavailable |\n| 504 | Gateway Timeout |\n| 505 | HTTP Version Not Supported |\n| 506 | Variant Also Negotiates |\n| 507 | Insufficient Storage |\n| 508 | Loop Detected |\n| 510 | Not Extended |\n| 511 | Network Authentication Required |\n\n**305 Use Proxy** and **306 Switch Proxy** have been deprecated but are still reserved.\n\nAdditionally, codes outside these categories may be unofficial, not yet adopted, or specific to certain platforms or services. For example, Cloudflare uses the [521 Web Server Is Down](https:\/\/www.hostinger.com\/tutorials\/error-521) status code for connection errors.\n\n### 1XX – Informational HTTP status codes\n**100 Continue**This status code indicates that the server has received the initial part of the request. The client should continue sending the rest of the request and ignore this status code.\n\n**101 Switching Protocols**The server agrees to switch to the protocol specified in the **Upgrade** header. This response only happens if the change is beneficial.\n\n**102 Processing**The status code means that the server is still processing the request. It usually appears when a request takes a long time to complete.\n\n**103 Early Hints**This response code allows the browser to preload resources using the **Link** header while the server prepares the final response.\n\n### 2XX – Successful HTTP status codes\n**200 OK**\n\nThis status code indicates that the request has succeeded. However, the actual meaning of this response depends on the request method used (**GET**, **HEAD**, **POST**, **PUT**, **DELETE**, **OPTIONS**, or **TRACE**). We’ll dive into all the HTTP methods later in the article.\n\n**201 Created**\n\nThis status code is a typical response sent after a **POST** or **PUT** method. It indicates that the server has completed the request and is creating one or more new resources, identified by a **Location** header or the target URI.\n\n**202 Accepted**\n\nThe server has accepted the request but hasn’t processed it yet. This non-committal status allows the server to handle the request later without requiring the client to stay connected, making it ideal for batch processing.\n\n**203 Non-Authoritative Information**\n\nThis status code means the request was successful, but a proxy modified the response data from the origin server. It’s commonly used when the server retrieves data from a cache or third-party source, notifying recipients of potential changes to the original content, like in backups or mirrored resources.\n\n**204 No Content**\n\nThis status code means that the server successfully processed the request but has no content to send in the response. It’s used for actions that don’t require updating the browser’s current view.\n\n**205 Reset Content**\n\nThe request was successful, and the client should reset the document view ‒ a notepad, form, or canvas ‒ to its default state.\n\n**206 Partial Content**This status code is sent when a client requests part of a resource using the **Range** header, which reduces bandwidth usage and improves performance.\n\nIt commonly happens when resuming interrupted downloads, streaming media files, handling large file transfers in chunks, and fetching specific data segments during synchronization.\n\n**207 Multi-Status**\n\nThis status code provides the status of multiple resources in a single response. The XML message body typically includes a multi-status root element detailing each resource’s success, partial success, or failure.\n\n**208 Already Reported**\n\nThis status code is used inside a [DAV:propstat](http:\/\/webdav.org\/specs\/rfc2518.html) response element to avoid listing duplicate internal members of collections. Only one resource reports a **200 OK** status, while duplicates use **208**.\n\n**226 IM Used**\n\nThe server successfully processed a **GET** request and applied one or more [instance manipulations](https:\/\/www.iana.org\/assignments\/inst-man-values\/inst-man-values.xhtml) to the resource in the response.\n\n### 3XX – Redirection HTTP status codes\n**300 Multiple Choices**\n\nThis status code indicates that multiple responses are available, and the client must choose one.\n\nFor example, it can happen when a resource has multiple language versions, such as English and French. The response includes a list of options with resource details and locations. If the server has a preferred choice, it provides a **Location** header for automatic redirection.\n\n**301 Moved Permanently**\n\nThis status code means the requested resource has been permanently moved to a new URL. All future requests should use the new address provided in the response.\n\nThe server’s response usually includes a link to the new URL, except for **HEAD** requests. For methods other than **GET** and **HEAD**, redirection only happens if the client allows it.\n\n**302 Found**\n\nThis status code means that the requested resource is temporarily available at a different URI. Future requests should continue to use the original address unless otherwise directed.\n\nFor non-**HEAD** requests, the server’s response usually includes a link to the temporary URI. Redirection only occurs if the client allows it.\n\nCheck out our [302 error](https:\/\/www.hostinger.com\/tutorials\/302-found-error) tutorial for troubleshooting methods and common use cases.\n\n**303 See Other**\n\nThis status code redirects the client to a different resource using the **GET** method. It means the server cannot provide the requested resource directly.\n\nFor example, after submitting a form, the server redirects the client to a confirmation page instead of showing the result directly.\n\n**304 Not Modified**\n\nThis status code means the requested resource hasn’t changed, so the client can use its cached version. It’s typically triggered by **GET** or **HEAD** requests with conditional headers like **If-None-Match** or **If-Modified-Since**.\n\nCheck out our tutorial on the [304 status code](https:\/\/www.hostinger.com\/tutorials\/304-status-code) for more details and troubleshooting steps.\n\n**307 Temporary Redirect**\n\nThe server sends this status code to redirect the client to another URI temporarily. Since it is temporary, the client may need to use the original address in the future. Unlike **302 Found**, the client must keep the same HTTP method during the redirect.\n\n**308 Permanent Redirect**\n\nThis status code indicates the resource has permanently moved to a new URI in the HTTP header.\n\nIt has the same semantics as **301 Moved Permanently**, except that **308 Permanent Redirect** doesn’t allow the client to change the request method.\n\n### 4XX – Client error HTTP status codes\n**400 Bad Request**\n\nThis status code means the server couldn’t process the request due to a client-side error, like invalid syntax or routing. To fix a [400 error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-400-bad-request-error), check the URL and clear your browser’s cache and cookies.\n\n**401 Unauthorized**\n\nThe server rejected the request due to missing or invalid user authentication. If the request included credentials, it indicates the server refused to authorize them. The response usually comes with a **WWW-Authenticate** header containing instructions to access the resource.\n\nIf you come across a [401 error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-the-401-unauthorized-error), check out our dedicated tutorial for troubleshooting steps.\n\n**402 Payment Required**\n\nThis non-standard status code was intended for digital payment systems. However, it’s rarely used, and there are no clear rules for it.\n\n**403 Forbidden**\n\nThe server understood the request but denied access, usually due to insufficient permissions. Re-authentication won’t resolve a [403 error](https:\/\/www.hostinger.com\/tutorials\/what-is-403-forbidden-error-and-how-to-fix-it), as access is permanently restricted. The client can try again with different credentials.\n\n**404 Not Found**\n\nThis status code means that the server can’t find the requested resource and has no forwarding address. In a browser, it means the link is missing or unrecognized. In an API, it indicates the endpoint exists, but the resource doesn’t.\n\nLinks that return a [404 error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-error-404) are called broken or dead links, which can be temporary or permanent.\n\n**405 Method Not Allowed**\n\nThe origin server recognizes the request method, but the resource doesn’t support it. The response usually includes an **Allow** header listing the supported methods.\n\nTo fix a [405 error](https:\/\/www.hostinger.com\/tutorials\/error-405-method-not-allowed), check the URL and review any database changes.\n\n**406 Not Acceptable**\n\nThe server sends this invalid response when it doesn’t find any content that matches the criteria in the request’s **Accept** headers. The server will provide a list of available options so the client can choose the most suitable one.\n\n**407 Proxy Authentication Required**\n\nThe server displays this code when using a proxy. The client must provide valid authentication credentials to access the requested resource. Unlike **401 Unauthorized**, the client must authenticate with the specified proxy server instead of the origin server.\n\n**408 Request Timeout**This status code means the server didn’t receive the full request within the allowed time. The response usually suggests closing the unused connection.\n\nTo fix it, the client can resend the request without changes. This error can occur in browsers like Chrome and Firefox, which use pre-connection to speed up loading.\n\n**409 Conflict**\n\nThe server can’t process the request due to a conflict with the resource. It provides details about the issue so the client can fix it and try again, usually with a **PUT** request.\n\n**410 Gone**This response code means the resource is permanently unavailable without any forwarding address. When this occurs, search engines will remove the page from their index. It shows the site owner intentionally made the resource unavailable and wants to remove any links to it.\n\n**411 Length Required**\n\nThe server rejected the request because it needs a **Content-Length** header.\n\n**412 Precondition Failed**\n\nThis invalid response shows the server couldn’t meet one or more conditions specified in the request headers.\n\n**413 Payload Too Large**\n\nThe server usually sends this error code when a request is too large to process. To fix a [413 error](https:\/\/www.hostinger.com\/tutorials\/413-request-entity-too-large-error), the server might close the connection and include a **Retry-After** header, encouraging the client to try again later.\n\n**414 URI Too Long**\n\nThis status code means the request URI is too long for the server to process. While it’s rare, it can happen if a client converts a **POST** request into a **GET** request with too much query information, enters a redirection loop, or attempts to exploit server vulnerabilities.\n\n**415 Unsupported Media Type**\n\nThe server rejected the request because the resource uses an unsupported media format. This error code can also appear if the data compression method isn’t supported or if the content doesn’t meet the server’s expectations or rules.\n\n**416 Range Not Satisfiable**\n\nThe server sends this status code when it can’t process the range specified in the request. It happens when the range doesn’t exist in the resource or the value is invalid.\n\n**417 Expectation Failed**This status means the server can’t meet the requirements specified in the request’s **Expect** header.\n\n**418 I’m a Teapot**\n\nThis status code references an April Fools’ Day joke called the Hyper Text Coffee Pot Control Protocol, indicating that the server is a teapot and, therefore, can’t brew coffee. Some websites use it for requests they want to avoid.\n\n**421 Misdirected Request**\n\nThis status code happens when the client sends a request to the wrong server, which can’t respond to the given URL. The user can retry the request using a different connection or service.\n\n**422 Unprocessable Entity**\n\nThe server received the request but can’t process it due to issues like semantic errors, such as entering text in a form’s numeric field.\n\n**423 Locked**\n\nThis status means the resource is locked. The response often includes details about the lock.\n\n**424 Failed Dependency**\n\nThe request failed because it depended on a previous request that also failed.\n\n**425 Too Early**\n\nThe server refuses to process the request because it might be repeated later.\n\n**426 Upgrade Required**\n\nThe server won’t process the request unless the client switches to the required protocol stated in the **Upgrade** header.\n\n**428 Precondition Required**\n\nThis status code means that the server needs a conditional request so that the client is using the correct version of the resource.\n\n**429 Too Many Requests**\n\nThe [429 error](https:\/\/www.hostinger.com\/tutorials\/429-too-many-requests-error) occurs when the client sends too many requests in a short time. The server may include a **Retry-After** header to tell the client how long to wait before trying again.\n\n**431 Request Header Fields Too Large**\n\nThe server sends this status code when the request headers are too big to process. The client should reduce the header size and resend the request.\n\n**451 Unavailable for Legal Reasons**\n\nThis response code occurs when the client requests a resource that has been removed due to legal reasons, such as a blocked site or page. This mostly affects Internet Service Providers (ISPs) and search engines.\n\n### 5XX – Server error HTTP status codes\n**500 Internal Server Error**\n\nThis generic error code appears when the server encounters an unexpected issue that prevents it from completing the request. In many cases, server administrators log detailed information about the problem for troubleshooting.\n\n**501 Not Implemented**\n\nThis status means the server doesn’t support the functionality needed to complete the request. Servers only need to handle **GET** and **HEAD** methods by default.\n\nThe response can include a **Retry-After** header, letting the client know when the functionality might be available.\n\n**502 Bad Gateway**\n\nThe gateway or proxy server gives this status code when it receives an invalid response while attempting to complete the request. If your site displays a [502 error](https:\/\/www.hostinger.com\/tutorials\/502-bad-gateway), you should contact your web host to fix it.\n\n**503 Service Unavailable**\n\nThis status means the server can’t handle the request due to temporary overload or maintenance. Check the response’s **Retry-After** header to see how long you should wait before trying again.\n\n**504 Gateway Timeout**\n\nThe gateway or proxy server sends this status code when it doesn’t get a timely response from the upstream server. If the [504 error](https:\/\/www.hostinger.com\/tutorials\/504-gateway-timeout) occurs on your website, check your hosting resources or try using a different browser to solve it.\n\n**505 HTTP Version Not Supported**\n\nThe server sends this code when it doesn’t support the HTTP version used in the request. The response will explain why that version doesn’t work and offer acceptable protocols.\n\n**506 Variant Also Negotiates**\n\nThis status code indicates a server configuration error. It happens when the chosen resource variant is set up for [content negotiation](https:\/\/www.javatpoint.com\/http-content-negotiation) but isn’t a valid endpoint, causing a loop.\n\n**507 Insufficient Storage**\n\nThe server doesn’t have enough storage to complete the request.\n\n**508 Loop Detected**\n\nThis status means the server stopped an operation because it detected an infinite loop, causing the process to fail.\n\n**510 Not Extended**\n\nThis status code means the server needs further extensions to complete the request successfully.\n\n**511 Network Authentication Required**\n\nThe client must authenticate itself to access the network. The response usually includes a link to submit credentials. It addresses security issues with captive portals or the web pages users see before accessing public Wi-Fi networks.\n\n## Understanding HTTP request and response\nHTTP defines request methods to tell the server what action to take with a resource. These methods share common features: safe, idempotent, or cacheable.\n\nMethods are considered safe if they don’t modify anything on the server and work on a read-only basis. Idempotent methods give the same result no matter how often you run them without unintended side effects. Cacheable methods allow browsers or proxies to save responses for reuse, improving efficiency.\n\nHere’s a list of standardized request methods commonly used in HTTP:\n\n- **GET** ‒ retrieves data from a resource.\n- **HEAD** ‒ requests the same response as **GET** but without a message body.\n- **POST** ‒ sends data to a resource, like submitting a form.\n- **PUT** ‒ replaces a resource or its representation entirely.\n- **DELETE** ‒ removes a resource.\n- **OPTIONS** ‒ shows the communication options for the resource.\n- **TRACE** ‒ tests the path of a request.\n- **PATCH** ‒ updates part of a resource.\n\nThese request methods often connect with HTTP status codes, showing if the action succeeded or failed. For example, a **GET** request can return **200 OK** if it works or **404 Not Found** if the resource doesn’t exist.\n\n## How to check a page’s HTTP status code\nUsers rarely see status codes in the 1XX and 2XX categories. Instead, they usually encounter 3XX, 4XX, or 5XX status codes when something goes wrong.\n\nThe easiest way to check a page’s HTTP status codes is to use your browser’s [Inspect Element](https:\/\/www.hostinger.com\/tutorials\/website\/how-to-inspect-and-change-style-using-google-chrome) tool. If you’re on Chrome, right-click anywhere on the page and select **Inspect**. Then, select **Network** on the top menu.\n\n![Chrome's Inspect Element, highlighting a page's HTTP status codes in the Network tab ](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2021\/11\/chrome-inspect-element.png\/public)\n\nWith [WebSniffer](https:\/\/websniffer.cc\/), you can check a page’s HTTP request headers by selecting the request type (**GET**, **POST**, or **HEAD**) and client. This feature helps you see how the page loads on different browsers and even Googlebot.\n\n![A page's HTTP response header shown in Websniffer ](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2021\/11\/websniffer.png\/public)\n\n## Important HTTP status code for SEO\nSearch engine bots register all HTTP status codes while crawling your site and will use this information to determine its health and ranking. Let’s see some of the status codes that significantly impact your site’s SEO.\n\n### 200: OK\nThe **200 OK** status positively impacts SEO because it signals to search engines that the page is accessible and working properly for visitors. It confirms the page is indexed, ranks in search results, and provides a smooth user experience.\n\n### 301: Moved Permanently\nThe **301 Moved Permanently** status helps SEO by redirecting traffic from an old URL to a new one. It tells search engines the old page has moved, so they transfer its ranking and authority ‒ also known as [link equity](https:\/\/ahrefs.com\/seo\/glossary\/link-equity) ‒ to the new page. This keeps your site’s SEO stable and avoids broken links.\n\nIf you own a WordPress website, check out our dedicated tutorial on [creating 301 redirects](https:\/\/www.hostinger.com\/tutorials\/301-redirects-in-wordpress). As for best practices, make sure to:\n\n- **Redirect relevant pages** ‒ pick pages with similar content to maintain user experience and SEO value.\n- **Update internal links** ‒ replace old URLs with new ones in your site’s navigation, menus, and content so that visitors don’t come across broken links.\n- **Check external links** ‒ ask other sites that link to your old URL to update their links if possible.\n- **Monitor redirects** ‒ test your redirects to avoid chains or loops, which can slow down your site and confuse search engines.\n- **Inform search engines** ‒ submit an updated [sitemap](https:\/\/www.hostinger.com\/tutorials\/what-is-a-sitemap) to inform search engines about the new URL structure.\n### 302: Found\nSince **302 Found** is a temporary redirect, search engines assume the original URL will return and often keep it indexed. Using it for a permanent move can hurt your SEO as it splits ranking and authority between the old and new URLs.\n\nTherefore, only allow this status code for temporary situations, like during maintenance or testing. Replace it with **301** the moment the change becomes permanent.\n\n### 404: Not Found\nThe 404 Not Found response is bad news for SEO and user experience. Search engines might remove **404** pages from their index, which means lost traffic. If the page has backlinks, you could lose valuable SEO benefits. It can also frustrate visitors, causing them to leave and mistrust your site.\n\nImmediately fixing the error code is the best way to minimize the damage. It’s also a great practice to create a custom **404** error page, which you can populate with navigation links or information to keep visitors engaged.\n\nHostinger users can set up custom error pages in hPanel by going to **Website** → **Error Pages**. Alternatively, use WordPress plugins like **SeedProd** or **Smart Custom 404 Error Page** to get the job done without coding.\n\nMore importantly, regularly scan your website for **404** errors using Hostinger’s built-in [AI Troubleshooter](https:\/\/www.hostinger.com\/blog\/wordpress-ai-troubleshooter) or third-party tools like **Google Search Console**.\n\n#### Did you know?\nAvailable for Hostinger’s Managed WordPress Hosting users, AI Troubleshooter automatically detects and fixes common errors affecting the website, including **404**.\n### 410: Gone\nThe **410 Gone** status code can benefit your SEO when used on permanently removed pages. It’s more effective than **404 Not Found** because it clearly tells search engines to remove the page from their index.\n\nHowever, using it on pages with valuable backlinks or significant traffic can result in lost link equity and SEO value. It can also confuse users if there’s no clear alternative to the page.\n\nOnly use 410 for pages you want to remove permanently and don’t plan to replace. Better yet, redirect visitors and search engines to another relevant page using a **301**.\n\n### 500: Internal Server Error\nThis status code can make it harder for search engines to crawl your site, leading to missed opportunities and unindexed pages. If the error lasts too long, search engines might view your site as unreliable, potentially affecting your rankings.\n\nFor WordPress sites, bad plugins and a corrupted [.htaccess file](https:\/\/www.hostinger.com\/tutorials\/locate-and-create-htaccess) are common causes of a 500 Internal Server Error. Check out our tutorial on [fixing the 500 HTTP error](https:\/\/www.hostinger.com\/tutorials\/how-to-fix-500-internal-server-error-in-wordpress) for troubleshooting steps and contact your hosting provider if the error persists.\n\n### 503: Service Unavailable\nThe **503 Service Unavailable** error means the server is temporarily down, usually due to maintenance or overload. Unlike the **500** error, it’s usually planned.\n\nWhile short-term **503** errors won’t hurt your SEO much, leaving them unresolved for too long can lead to lost traffic, higher bounce rates, and lower rankings.\n\nTo fix it, finish up your maintenance or reduce the server load. You can also try other troubleshooting methods in our [503 Service Unavailable](https:\/\/www.hostinger.com\/tutorials\/503-service-unavailable) tutorial. If nothing works, check with your hosting provider to see if the problem is from their end.\n\n## HTTP status codes FAQ\n### How many HTTP status codes are there?\nThe [IANA registry](https:\/\/www.iana.org\/assignments\/http-status-codes\/http-status-codes.xhtml) lists status codes from **100** to **599**. Only 63 are standardized and widely used, while the rest are unassigned.\n\n### Should I check my site for HTTP status code errors?\nAbsolutely! Checking for and solving HTTP status code errors helps improve your site’s performance and user experience and protects your search rankings.\n\n### How do I fix 4XX and 5XX HTTP status code errors?\nSince 4XX errors come from the client side, check for URL typos or update permissions to resolve them. For 5XX server errors, review your server settings, logs, and resources. Contact your hosting provider if needed.\n\n**All of the tutorial content on this website is subject to  [Hostinger's rigorous editorial standards and values.](https:\/\/www.hostinger.com\/tutorials\/editorial-standards-and-values)**\n\n![Author](https:\/\/imagedelivery.net\/LqiWLm-3MGbYHtFuUbcBtA\/wp-content\/uploads\/sites\/2\/2025\/08\/jojo-profile.jpeg\/w=96,h=96,fit=scale-down)\n\nJordana is a Senior Content Writer with a background in Information Systems. She has over five years of experience in WordPress and is casually dabbling with PHP and MySQL. Her passion for writing and technology drives her to create tutorials for anyone wanting to build their online presence. Follow her on [LinkedIn](https:\/\/www.linkedin.com\/in\/jordana-alexandrea\/).","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

1 day ago

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ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.1 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.hostinger.com/tutorials/http-status-codes
Last Crawled	2026-04-08 20:13:28 (1 day ago)
First Indexed	2021-11-06 17:54:25 (4 years ago)
HTTP Status Code	200
Meta Title	HTTP status codes: full list and explanations
Meta Description	HTTP status codes indicate the status of a browser's request. Learn all 63 status codes here and their impact on SEO here.
Meta Canonical	null
Boilerpipe Text	Oct 27, 2025 / Jordana A. / 13min read HTTP response codes are three-digit numbers sent by a server to indicate the status of a browser’s request. Managed by the Internet Assigned Numbers Authority (IANA), these codes help identify whether a request was successful, redirected, or resulted in an error. If you’re managing a website, understanding these codes is useful for diagnosing site issues, minimizing downtime, and optimizing SEO. Keep reading as we cover 63 HTTP status codes, their meanings, and how to monitor them. HTTP status code categories When identifying an HTTP status code, focus on the first digit to determine its category. The last two digits provide specific details within that category. The Internet Engineering Task Force (IETF) standardized HTTP status codes into five categories based on the server’s response to the browser: 1XX (informational) – the server received the HTTP request and will continue the process. Status codes within this category are temporary, so they aren’t visible to the client. 2XX (success) – the server received, understood, and processed the request. 3XX (redirection) – the server received the request, but the requested content has moved. Therefore, it will redirect the client to another location. 4XX (client error) – the server couldn’t complete the request because of a client-side issue, such as an authorization problem. The response explains whether the issue is temporary or permanent. 5XX (server error) – a server-side issue prevents the request from being processed. Like 4XX, the response specifies if it’s a temporary or permanent issue. Complete list of HTTP status codes and explanation Here is the complete list of HTTP status codes from IEFT documentation: Status codes Functions 1XX Informational 100 Continue 101 Switching Protocols 102 Processing 103 Early Hints 2XX Successful 200 OK 201 Created 202 Accepted 203 Non-Authoritative Information 204 No Content 205 Reset Content 206 Partial Content 207 Multi-Status 208 Already Reported 226 IM Used 3XX Redirection 300 Multiple Choices 301 Moved Permanently 302 Found 303 See Other 304 Not Modified 307 Temporary Redirect 308 Permanent Redirect 4XX Client Error 400 Bad Request 401 Unauthorized 402 Payment Required 403 Forbidden 404 Not Found 405 Method Not Allowed 406 Not Acceptable 407 Proxy Authentication Required 408 Request Timeout 409 Conflict 410 Gone 411 Length Required 412 Precondition Failed 413 Content Too Large 414 URI Too Long 415 Unsupported Media Type 416 Range Not Satisfiable 417 Expectation Failed 418 I’m a Teapot 421 Misdirected Request 422 Unprocessable Entity 423 Locked 424 Failed Dependency 425 Too Early 426 Upgrade Required 428 Precondition Required 429 Too Many Requests 431 Request Header Fields Too Large 451 Unavailable for Legal Reasons 5XX Server Error 500 Internal Server Error 501 Not Implemented 502 Bad Gateway 503 Service Unavailable 504 Gateway Timeout 505 HTTP Version Not Supported 506 Variant Also Negotiates 507 Insufficient Storage 508 Loop Detected 510 Not Extended 511 Network Authentication Required 305 Use Proxy and 306 Switch Proxy have been deprecated but are still reserved. Additionally, codes outside these categories may be unofficial, not yet adopted, or specific to certain platforms or services. For example, Cloudflare uses the 521 Web Server Is Down status code for connection errors. 1XX – Informational HTTP status codes 100 Continue This status code indicates that the server has received the initial part of the request. The client should continue sending the rest of the request and ignore this status code. 101 Switching Protocols The server agrees to switch to the protocol specified in the Upgrade header. This response only happens if the change is beneficial. 102 Processing The status code means that the server is still processing the request. It usually appears when a request takes a long time to complete. 103 Early Hints This response code allows the browser to preload resources using the Link header while the server prepares the final response. 2XX – Successful HTTP status codes 200 OK This status code indicates that the request has succeeded. However, the actual meaning of this response depends on the request method used ( GET , HEAD , POST , PUT , DELETE , OPTIONS , or TRACE ). We’ll dive into all the HTTP methods later in the article. 201 Created This status code is a typical response sent after a POST or PUT method. It indicates that the server has completed the request and is creating one or more new resources, identified by a Location header or the target URI. 202 Accepted The server has accepted the request but hasn’t processed it yet. This non-committal status allows the server to handle the request later without requiring the client to stay connected, making it ideal for batch processing. 203 Non-Authoritative Information This status code means the request was successful, but a proxy modified the response data from the origin server. It’s commonly used when the server retrieves data from a cache or third-party source, notifying recipients of potential changes to the original content, like in backups or mirrored resources. 204 No Content This status code means that the server successfully processed the request but has no content to send in the response. It’s used for actions that don’t require updating the browser’s current view. 205 Reset Content The request was successful, and the client should reset the document view ‒ a notepad, form, or canvas ‒ to its default state. 206 Partial Content This status code is sent when a client requests part of a resource using the Range header, which reduces bandwidth usage and improves performance. It commonly happens when resuming interrupted downloads, streaming media files, handling large file transfers in chunks, and fetching specific data segments during synchronization. 207 Multi-Status This status code provides the status of multiple resources in a single response. The XML message body typically includes a multi-status root element detailing each resource’s success, partial success, or failure. 208 Already Reported This status code is used inside a DAV:propstat response element to avoid listing duplicate internal members of collections. Only one resource reports a 200 OK status, while duplicates use 208 . 226 IM Used The server successfully processed a GET request and applied one or more instance manipulations to the resource in the response. 3XX – Redirection HTTP status codes 300 Multiple Choices This status code indicates that multiple responses are available, and the client must choose one. For example, it can happen when a resource has multiple language versions, such as English and French. The response includes a list of options with resource details and locations. If the server has a preferred choice, it provides a Location header for automatic redirection. 301 Moved Permanently This status code means the requested resource has been permanently moved to a new URL. All future requests should use the new address provided in the response. The server’s response usually includes a link to the new URL, except for HEAD requests. For methods other than GET and HEAD , redirection only happens if the client allows it. 302 Found This status code means that the requested resource is temporarily available at a different URI. Future requests should continue to use the original address unless otherwise directed. For non- HEAD requests, the server’s response usually includes a link to the temporary URI. Redirection only occurs if the client allows it. Check out our 302 error tutorial for troubleshooting methods and common use cases. 303 See Other This status code redirects the client to a different resource using the GET method. It means the server cannot provide the requested resource directly. For example, after submitting a form, the server redirects the client to a confirmation page instead of showing the result directly. 304 Not Modified This status code means the requested resource hasn’t changed, so the client can use its cached version. It’s typically triggered by GET or HEAD requests with conditional headers like If-None-Match or If-Modified-Since . Check out our tutorial on the 304 status code for more details and troubleshooting steps. 307 Temporary Redirect The server sends this status code to redirect the client to another URI temporarily. Since it is temporary, the client may need to use the original address in the future. Unlike 302 Found , the client must keep the same HTTP method during the redirect. 308 Permanent Redirect This status code indicates the resource has permanently moved to a new URI in the HTTP header. It has the same semantics as 301 Moved Permanently , except that 308 Permanent Redirect doesn’t allow the client to change the request method. 4XX – Client error HTTP status codes 400 Bad Request This status code means the server couldn’t process the request due to a client-side error, like invalid syntax or routing. To fix a 400 error , check the URL and clear your browser’s cache and cookies. 401 Unauthorized The server rejected the request due to missing or invalid user authentication. If the request included credentials, it indicates the server refused to authorize them. The response usually comes with a WWW-Authenticate header containing instructions to access the resource. If you come across a 401 error , check out our dedicated tutorial for troubleshooting steps. 402 Payment Required This non-standard status code was intended for digital payment systems. However, it’s rarely used, and there are no clear rules for it. 403 Forbidden The server understood the request but denied access, usually due to insufficient permissions. Re-authentication won’t resolve a 403 error , as access is permanently restricted. The client can try again with different credentials. 404 Not Found This status code means that the server can’t find the requested resource and has no forwarding address. In a browser, it means the link is missing or unrecognized. In an API, it indicates the endpoint exists, but the resource doesn’t. Links that return a 404 error are called broken or dead links, which can be temporary or permanent. 405 Method Not Allowed The origin server recognizes the request method, but the resource doesn’t support it. The response usually includes an Allow header listing the supported methods. To fix a 405 error , check the URL and review any database changes. 406 Not Acceptable The server sends this invalid response when it doesn’t find any content that matches the criteria in the request’s Accept headers. The server will provide a list of available options so the client can choose the most suitable one. 407 Proxy Authentication Required The server displays this code when using a proxy. The client must provide valid authentication credentials to access the requested resource. Unlike 401 Unauthorized , the client must authenticate with the specified proxy server instead of the origin server. 408 Request Timeout This status code means the server didn’t receive the full request within the allowed time. The response usually suggests closing the unused connection. To fix it, the client can resend the request without changes. This error can occur in browsers like Chrome and Firefox, which use pre-connection to speed up loading. 409 Conflict The server can’t process the request due to a conflict with the resource. It provides details about the issue so the client can fix it and try again, usually with a PUT request. 410 Gone This response code means the resource is permanently unavailable without any forwarding address. When this occurs, search engines will remove the page from their index. It shows the site owner intentionally made the resource unavailable and wants to remove any links to it. 411 Length Required The server rejected the request because it needs a Content-Length header. 412 Precondition Failed This invalid response shows the server couldn’t meet one or more conditions specified in the request headers. 413 Payload Too Large The server usually sends this error code when a request is too large to process. To fix a 413 error , the server might close the connection and include a Retry-After header, encouraging the client to try again later. 414 URI Too Long This status code means the request URI is too long for the server to process. While it’s rare, it can happen if a client converts a POST request into a GET request with too much query information, enters a redirection loop, or attempts to exploit server vulnerabilities. 415 Unsupported Media Type The server rejected the request because the resource uses an unsupported media format. This error code can also appear if the data compression method isn’t supported or if the content doesn’t meet the server’s expectations or rules. 416 Range Not Satisfiable The server sends this status code when it can’t process the range specified in the request. It happens when the range doesn’t exist in the resource or the value is invalid. 417 Expectation Failed This status means the server can’t meet the requirements specified in the request’s Expect header. 418 I’m a Teapot This status code references an April Fools’ Day joke called the Hyper Text Coffee Pot Control Protocol, indicating that the server is a teapot and, therefore, can’t brew coffee. Some websites use it for requests they want to avoid. 421 Misdirected Request This status code happens when the client sends a request to the wrong server, which can’t respond to the given URL. The user can retry the request using a different connection or service. 422 Unprocessable Entity The server received the request but can’t process it due to issues like semantic errors, such as entering text in a form’s numeric field. 423 Locked This status means the resource is locked. The response often includes details about the lock. 424 Failed Dependency The request failed because it depended on a previous request that also failed. 425 Too Early The server refuses to process the request because it might be repeated later. 426 Upgrade Required The server won’t process the request unless the client switches to the required protocol stated in the Upgrade header. 428 Precondition Required This status code means that the server needs a conditional request so that the client is using the correct version of the resource. 429 Too Many Requests The 429 error occurs when the client sends too many requests in a short time. The server may include a Retry-After header to tell the client how long to wait before trying again. 431 Request Header Fields Too Large The server sends this status code when the request headers are too big to process. The client should reduce the header size and resend the request. 451 Unavailable for Legal Reasons This response code occurs when the client requests a resource that has been removed due to legal reasons, such as a blocked site or page. This mostly affects Internet Service Providers (ISPs) and search engines. 5XX – Server error HTTP status codes 500 Internal Server Error This generic error code appears when the server encounters an unexpected issue that prevents it from completing the request. In many cases, server administrators log detailed information about the problem for troubleshooting. 501 Not Implemented This status means the server doesn’t support the functionality needed to complete the request. Servers only need to handle GET and HEAD methods by default. The response can include a Retry-After header, letting the client know when the functionality might be available. 502 Bad Gateway The gateway or proxy server gives this status code when it receives an invalid response while attempting to complete the request. If your site displays a 502 error , you should contact your web host to fix it. 503 Service Unavailable This status means the server can’t handle the request due to temporary overload or maintenance. Check the response’s Retry-After header to see how long you should wait before trying again. 504 Gateway Timeout The gateway or proxy server sends this status code when it doesn’t get a timely response from the upstream server. If the 504 error occurs on your website, check your hosting resources or try using a different browser to solve it. 505 HTTP Version Not Supported The server sends this code when it doesn’t support the HTTP version used in the request. The response will explain why that version doesn’t work and offer acceptable protocols. 506 Variant Also Negotiates This status code indicates a server configuration error. It happens when the chosen resource variant is set up for content negotiation but isn’t a valid endpoint, causing a loop. 507 Insufficient Storage The server doesn’t have enough storage to complete the request. 508 Loop Detected This status means the server stopped an operation because it detected an infinite loop, causing the process to fail. 510 Not Extended This status code means the server needs further extensions to complete the request successfully. 511 Network Authentication Required The client must authenticate itself to access the network. The response usually includes a link to submit credentials. It addresses security issues with captive portals or the web pages users see before accessing public Wi-Fi networks. Understanding HTTP request and response HTTP defines request methods to tell the server what action to take with a resource. These methods share common features: safe, idempotent, or cacheable. Methods are considered safe if they don’t modify anything on the server and work on a read-only basis. Idempotent methods give the same result no matter how often you run them without unintended side effects. Cacheable methods allow browsers or proxies to save responses for reuse, improving efficiency. Here’s a list of standardized request methods commonly used in HTTP: GET ‒ retrieves data from a resource. HEAD ‒ requests the same response as GET but without a message body. POST ‒ sends data to a resource, like submitting a form. PUT ‒ replaces a resource or its representation entirely. DELETE ‒ removes a resource. OPTIONS ‒ shows the communication options for the resource. TRACE ‒ tests the path of a request. PATCH ‒ updates part of a resource. These request methods often connect with HTTP status codes, showing if the action succeeded or failed. For example, a GET request can return 200 OK if it works or 404 Not Found if the resource doesn’t exist. How to check a page’s HTTP status code Users rarely see status codes in the 1XX and 2XX categories. Instead, they usually encounter 3XX, 4XX, or 5XX status codes when something goes wrong. The easiest way to check a page’s HTTP status codes is to use your browser’s Inspect Element tool. If you’re on Chrome, right-click anywhere on the page and select Inspect . Then, select Network on the top menu. With WebSniffer , you can check a page’s HTTP request headers by selecting the request type ( GET , POST , or HEAD ) and client. This feature helps you see how the page loads on different browsers and even Googlebot. Important HTTP status code for SEO Search engine bots register all HTTP status codes while crawling your site and will use this information to determine its health and ranking. Let’s see some of the status codes that significantly impact your site’s SEO. 200: OK The 200 OK status positively impacts SEO because it signals to search engines that the page is accessible and working properly for visitors. It confirms the page is indexed, ranks in search results, and provides a smooth user experience. 301: Moved Permanently The 301 Moved Permanently status helps SEO by redirecting traffic from an old URL to a new one. It tells search engines the old page has moved, so they transfer its ranking and authority ‒ also known as link equity ‒ to the new page. This keeps your site’s SEO stable and avoids broken links. If you own a WordPress website, check out our dedicated tutorial on creating 301 redirects . As for best practices, make sure to: Redirect relevant pages ‒ pick pages with similar content to maintain user experience and SEO value. Update internal links ‒ replace old URLs with new ones in your site’s navigation, menus, and content so that visitors don’t come across broken links. Check external links ‒ ask other sites that link to your old URL to update their links if possible. Monitor redirects ‒ test your redirects to avoid chains or loops, which can slow down your site and confuse search engines. Inform search engines ‒ submit an updated sitemap to inform search engines about the new URL structure. 302: Found Since 302 Found is a temporary redirect, search engines assume the original URL will return and often keep it indexed. Using it for a permanent move can hurt your SEO as it splits ranking and authority between the old and new URLs. Therefore, only allow this status code for temporary situations, like during maintenance or testing. Replace it with 301 the moment the change becomes permanent. 404: Not Found The 404 Not Found response is bad news for SEO and user experience. Search engines might remove 404 pages from their index, which means lost traffic. If the page has backlinks, you could lose valuable SEO benefits. It can also frustrate visitors, causing them to leave and mistrust your site. Immediately fixing the error code is the best way to minimize the damage. It’s also a great practice to create a custom 404 error page, which you can populate with navigation links or information to keep visitors engaged. Hostinger users can set up custom error pages in hPanel by going to Website → Error Pages . Alternatively, use WordPress plugins like SeedProd or Smart Custom 404 Error Page to get the job done without coding. More importantly, regularly scan your website for 404 errors using Hostinger’s built-in AI Troubleshooter or third-party tools like Google Search Console . Did you know? Available for Hostinger’s Managed WordPress Hosting users, AI Troubleshooter automatically detects and fixes common errors affecting the website, including 404 . 410: Gone The 410 Gone status code can benefit your SEO when used on permanently removed pages. It’s more effective than 404 Not Found because it clearly tells search engines to remove the page from their index. However, using it on pages with valuable backlinks or significant traffic can result in lost link equity and SEO value. It can also confuse users if there’s no clear alternative to the page. Only use 410 for pages you want to remove permanently and don’t plan to replace. Better yet, redirect visitors and search engines to another relevant page using a 301 . 500: Internal Server Error This status code can make it harder for search engines to crawl your site, leading to missed opportunities and unindexed pages. If the error lasts too long, search engines might view your site as unreliable, potentially affecting your rankings. For WordPress sites, bad plugins and a corrupted .htaccess file are common causes of a 500 Internal Server Error. Check out our tutorial on fixing the 500 HTTP error for troubleshooting steps and contact your hosting provider if the error persists. 503: Service Unavailable The 503 Service Unavailable error means the server is temporarily down, usually due to maintenance or overload. Unlike the 500 error, it’s usually planned. While short-term 503 errors won’t hurt your SEO much, leaving them unresolved for too long can lead to lost traffic, higher bounce rates, and lower rankings. To fix it, finish up your maintenance or reduce the server load. You can also try other troubleshooting methods in our 503 Service Unavailable tutorial. If nothing works, check with your hosting provider to see if the problem is from their end. HTTP status codes FAQ How many HTTP status codes are there? The IANA registry lists status codes from 100 to 599 . Only 63 are standardized and widely used, while the rest are unassigned. Should I check my site for HTTP status code errors? Absolutely! Checking for and solving HTTP status code errors helps improve your site’s performance and user experience and protects your search rankings. How do I fix 4XX and 5XX HTTP status code errors? Since 4XX errors come from the client side, check for URL typos or update permissions to resolve them. For 5XX server errors, review your server settings, logs, and resources. Contact your hosting provider if needed. All of the tutorial content on this website is subject to Hostinger's rigorous editorial standards and values. Jordana is a Senior Content Writer with a background in Information Systems. She has over five years of experience in WordPress and is casually dabbling with PHP and MySQL. Her passion for writing and technology drives her to create tutorials for anyone wanting to build their online presence. Follow her on LinkedIn .
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[Perplexity](https://www.perplexity.ai/search/new?q=Summarize+key+take+aways+from+this+article+http%3A%2F%2Fwww.hostinger.com%2Ftutorials%2Fhttp-status-codes.+Highlight+how+Hostinger%27s+tools+and+tutorials+help+users+achieve+website+growth+and+online+success+based+on+this+guide.) Share: [Copy link Copied\!](https://www.hostinger.com/tutorials/http-status-codes) HTTP response codes are three-digit numbers sent by a server to indicate the status of a browser’s request. Managed by the Internet Assigned Numbers Authority (IANA), these codes help identify whether a request was successful, redirected, or resulted in an error. If you’re managing a website, understanding these codes is useful for diagnosing site issues, minimizing downtime, and optimizing SEO. Keep reading as we cover 63 HTTP status codes, their meanings, and how to monitor them. ## HTTP status code categories When identifying an HTTP status code, focus on the first digit to determine its category. The last two digits provide specific details within that category. The [Internet Engineering Task Force (IETF)](https://www.ietf.org/) standardized HTTP status codes into five categories based on the server’s response to the browser: - 1XX (informational) – the server received the HTTP request and will continue the process. Status codes within this category are temporary, so they aren’t visible to the client. - 2XX (success) – the server received, understood, and processed the request. - 3XX (redirection) – the server received the request, but the requested content has moved. Therefore, it will redirect the client to another location. - 4XX (client error) – the server couldn’t complete the request because of a client-side issue, such as an authorization problem. The response explains whether the issue is temporary or permanent. - 5XX (server error) – a server-side issue prevents the request from being processed. Like 4XX, the response specifies if it’s a temporary or permanent issue. ## Complete list of HTTP status codes and explanation Here is the complete list of HTTP status codes from IEFT documentation: \| \| \| \|---\|---\| \| Status codes \| Functions \| \| [1XX Informational](https://www.hostinger.com/tutorials/http-status-codes#:~:text=1XX%20%E2%80%93%20Informational%20HTTP%20status%20codes) \| \| \| 100 \| Continue \| \| 101 \| Switching Protocols \| \| 102 \| Processing \| \| 103 \| Early Hints \| \| [2XX Successful](https://www.hostinger.com/tutorials/http-status-codes#:~:text=2XX%20%E2%80%93%20Successful%20HTTP%20status%20codes) \| \| \| 200 \| OK \| \| 201 \| Created \| \| 202 \| Accepted \| \| 203 \| Non-Authoritative Information \| \| 204 \| No Content \| \| 205 \| Reset Content \| \| 206 \| Partial Content \| \| 207 \| Multi-Status \| \| 208 \| Already Reported \| \| 226 \| IM Used \| \| [3XX Redirection](https://www.hostinger.com/tutorials/http-status-codes#:~:text=3XX%20%E2%80%93%20Redirection%20HTTP%20status%20codes) \| \| \| 300 \| Multiple Choices \| \| 301 \| Moved Permanently \| \| 302 \| Found \| \| 303 \| See Other \| \| 304 \| Not Modified \| \| 307 \| Temporary Redirect \| \| 308 \| Permanent Redirect \| \| [4XX Client Error](https://www.hostinger.com/tutorials/http-status-codes#:~:text=4XX%20%E2%80%93%20Client%20error%20HTTP%20status%20codes) \| \| \| 400 \| Bad Request \| \| 401 \| Unauthorized \| \| 402 \| Payment Required \| \| 403 \| Forbidden \| \| 404 \| Not Found \| \| 405 \| Method Not Allowed \| \| 406 \| Not Acceptable \| \| 407 \| Proxy Authentication Required \| \| 408 \| Request Timeout \| \| 409 \| Conflict \| \| 410 \| Gone \| \| 411 \| Length Required \| \| 412 \| Precondition Failed \| \| 413 \| Content Too Large \| \| 414 \| URI Too Long \| \| 415 \| Unsupported Media Type \| \| 416 \| Range Not Satisfiable \| \| 417 \| Expectation Failed \| \| 418 \| I’m a Teapot \| \| 421 \| Misdirected Request \| \| 422 \| Unprocessable Entity \| \| 423 \| Locked \| \| 424 \| Failed Dependency \| \| 425 \| Too Early \| \| 426 \| Upgrade Required \| \| 428 \| Precondition Required \| \| 429 \| Too Many Requests \| \| 431 \| Request Header Fields Too Large \| \| 451 \| Unavailable for Legal Reasons \| \| [5XX Server Error](https://www.hostinger.com/tutorials/http-status-codes#:~:text=5XX%20%E2%80%93%20Server%20error%20HTTP%20status%20codes) \| \| \| 500 \| Internal Server Error \| \| 501 \| Not Implemented \| \| 502 \| Bad Gateway \| \| 503 \| Service Unavailable \| \| 504 \| Gateway Timeout \| \| 505 \| HTTP Version Not Supported \| \| 506 \| Variant Also Negotiates \| \| 507 \| Insufficient Storage \| \| 508 \| Loop Detected \| \| 510 \| Not Extended \| \| 511 \| Network Authentication Required \| 305 Use Proxy and 306 Switch Proxy have been deprecated but are still reserved. Additionally, codes outside these categories may be unofficial, not yet adopted, or specific to certain platforms or services. For example, Cloudflare uses the [521 Web Server Is Down](https://www.hostinger.com/tutorials/error-521) status code for connection errors. ### 1XX – Informational HTTP status codes 100 ContinueThis status code indicates that the server has received the initial part of the request. The client should continue sending the rest of the request and ignore this status code. 101 Switching ProtocolsThe server agrees to switch to the protocol specified in the Upgrade header. This response only happens if the change is beneficial. 102 ProcessingThe status code means that the server is still processing the request. It usually appears when a request takes a long time to complete. 103 Early HintsThis response code allows the browser to preload resources using the Link header while the server prepares the final response. ### 2XX – Successful HTTP status codes 200 OK This status code indicates that the request has succeeded. However, the actual meaning of this response depends on the request method used (GET, HEAD, POST, PUT, DELETE, OPTIONS, or TRACE). We’ll dive into all the HTTP methods later in the article. 201 Created This status code is a typical response sent after a POST or PUT method. It indicates that the server has completed the request and is creating one or more new resources, identified by a Location header or the target URI. 202 Accepted The server has accepted the request but hasn’t processed it yet. This non-committal status allows the server to handle the request later without requiring the client to stay connected, making it ideal for batch processing. 203 Non-Authoritative Information This status code means the request was successful, but a proxy modified the response data from the origin server. It’s commonly used when the server retrieves data from a cache or third-party source, notifying recipients of potential changes to the original content, like in backups or mirrored resources. 204 No Content This status code means that the server successfully processed the request but has no content to send in the response. It’s used for actions that don’t require updating the browser’s current view. 205 Reset Content The request was successful, and the client should reset the document view ‒ a notepad, form, or canvas ‒ to its default state. 206 Partial ContentThis status code is sent when a client requests part of a resource using the Range header, which reduces bandwidth usage and improves performance. It commonly happens when resuming interrupted downloads, streaming media files, handling large file transfers in chunks, and fetching specific data segments during synchronization. 207 Multi-Status This status code provides the status of multiple resources in a single response. The XML message body typically includes a multi-status root element detailing each resource’s success, partial success, or failure. 208 Already Reported This status code is used inside a [DAV:propstat](http://webdav.org/specs/rfc2518.html) response element to avoid listing duplicate internal members of collections. Only one resource reports a 200 OK status, while duplicates use 208. 226 IM Used The server successfully processed a GET request and applied one or more [instance manipulations](https://www.iana.org/assignments/inst-man-values/inst-man-values.xhtml) to the resource in the response. ### 3XX – Redirection HTTP status codes 300 Multiple Choices This status code indicates that multiple responses are available, and the client must choose one. For example, it can happen when a resource has multiple language versions, such as English and French. The response includes a list of options with resource details and locations. If the server has a preferred choice, it provides a Location header for automatic redirection. 301 Moved Permanently This status code means the requested resource has been permanently moved to a new URL. All future requests should use the new address provided in the response. The server’s response usually includes a link to the new URL, except for HEAD requests. For methods other than GET and HEAD, redirection only happens if the client allows it. 302 Found This status code means that the requested resource is temporarily available at a different URI. Future requests should continue to use the original address unless otherwise directed. For non-HEAD requests, the server’s response usually includes a link to the temporary URI. Redirection only occurs if the client allows it. Check out our [302 error](https://www.hostinger.com/tutorials/302-found-error) tutorial for troubleshooting methods and common use cases. 303 See Other This status code redirects the client to a different resource using the GET method. It means the server cannot provide the requested resource directly. For example, after submitting a form, the server redirects the client to a confirmation page instead of showing the result directly. 304 Not Modified This status code means the requested resource hasn’t changed, so the client can use its cached version. It’s typically triggered by GET or HEAD requests with conditional headers like If-None-Match or If-Modified-Since. Check out our tutorial on the [304 status code](https://www.hostinger.com/tutorials/304-status-code) for more details and troubleshooting steps. 307 Temporary Redirect The server sends this status code to redirect the client to another URI temporarily. Since it is temporary, the client may need to use the original address in the future. Unlike 302 Found, the client must keep the same HTTP method during the redirect. 308 Permanent Redirect This status code indicates the resource has permanently moved to a new URI in the HTTP header. It has the same semantics as 301 Moved Permanently, except that 308 Permanent Redirect doesn’t allow the client to change the request method. ### 4XX – Client error HTTP status codes 400 Bad Request This status code means the server couldn’t process the request due to a client-side error, like invalid syntax or routing. To fix a [400 error](https://www.hostinger.com/tutorials/how-to-fix-400-bad-request-error), check the URL and clear your browser’s cache and cookies. 401 Unauthorized The server rejected the request due to missing or invalid user authentication. If the request included credentials, it indicates the server refused to authorize them. The response usually comes with a WWW-Authenticate header containing instructions to access the resource. If you come across a [401 error](https://www.hostinger.com/tutorials/how-to-fix-the-401-unauthorized-error), check out our dedicated tutorial for troubleshooting steps. 402 Payment Required This non-standard status code was intended for digital payment systems. However, it’s rarely used, and there are no clear rules for it. 403 Forbidden The server understood the request but denied access, usually due to insufficient permissions. Re-authentication won’t resolve a [403 error](https://www.hostinger.com/tutorials/what-is-403-forbidden-error-and-how-to-fix-it), as access is permanently restricted. The client can try again with different credentials. 404 Not Found This status code means that the server can’t find the requested resource and has no forwarding address. In a browser, it means the link is missing or unrecognized. In an API, it indicates the endpoint exists, but the resource doesn’t. Links that return a [404 error](https://www.hostinger.com/tutorials/how-to-fix-error-404) are called broken or dead links, which can be temporary or permanent. 405 Method Not Allowed The origin server recognizes the request method, but the resource doesn’t support it. The response usually includes an Allow header listing the supported methods. To fix a [405 error](https://www.hostinger.com/tutorials/error-405-method-not-allowed), check the URL and review any database changes. 406 Not Acceptable The server sends this invalid response when it doesn’t find any content that matches the criteria in the request’s Accept headers. The server will provide a list of available options so the client can choose the most suitable one. 407 Proxy Authentication Required The server displays this code when using a proxy. The client must provide valid authentication credentials to access the requested resource. Unlike 401 Unauthorized, the client must authenticate with the specified proxy server instead of the origin server. 408 Request TimeoutThis status code means the server didn’t receive the full request within the allowed time. The response usually suggests closing the unused connection. To fix it, the client can resend the request without changes. This error can occur in browsers like Chrome and Firefox, which use pre-connection to speed up loading. 409 Conflict The server can’t process the request due to a conflict with the resource. It provides details about the issue so the client can fix it and try again, usually with a PUT request. 410 GoneThis response code means the resource is permanently unavailable without any forwarding address. When this occurs, search engines will remove the page from their index. It shows the site owner intentionally made the resource unavailable and wants to remove any links to it. 411 Length Required The server rejected the request because it needs a Content-Length header. 412 Precondition Failed This invalid response shows the server couldn’t meet one or more conditions specified in the request headers. 413 Payload Too Large The server usually sends this error code when a request is too large to process. To fix a [413 error](https://www.hostinger.com/tutorials/413-request-entity-too-large-error), the server might close the connection and include a Retry-After header, encouraging the client to try again later. 414 URI Too Long This status code means the request URI is too long for the server to process. While it’s rare, it can happen if a client converts a POST request into a GET request with too much query information, enters a redirection loop, or attempts to exploit server vulnerabilities. 415 Unsupported Media Type The server rejected the request because the resource uses an unsupported media format. This error code can also appear if the data compression method isn’t supported or if the content doesn’t meet the server’s expectations or rules. 416 Range Not Satisfiable The server sends this status code when it can’t process the range specified in the request. It happens when the range doesn’t exist in the resource or the value is invalid. 417 Expectation FailedThis status means the server can’t meet the requirements specified in the request’s Expect header. 418 I’m a Teapot This status code references an April Fools’ Day joke called the Hyper Text Coffee Pot Control Protocol, indicating that the server is a teapot and, therefore, can’t brew coffee. Some websites use it for requests they want to avoid. 421 Misdirected Request This status code happens when the client sends a request to the wrong server, which can’t respond to the given URL. The user can retry the request using a different connection or service. 422 Unprocessable Entity The server received the request but can’t process it due to issues like semantic errors, such as entering text in a form’s numeric field. 423 Locked This status means the resource is locked. The response often includes details about the lock. 424 Failed Dependency The request failed because it depended on a previous request that also failed. 425 Too Early The server refuses to process the request because it might be repeated later. 426 Upgrade Required The server won’t process the request unless the client switches to the required protocol stated in the Upgrade header. 428 Precondition Required This status code means that the server needs a conditional request so that the client is using the correct version of the resource. 429 Too Many Requests The [429 error](https://www.hostinger.com/tutorials/429-too-many-requests-error) occurs when the client sends too many requests in a short time. The server may include a Retry-After header to tell the client how long to wait before trying again. 431 Request Header Fields Too Large The server sends this status code when the request headers are too big to process. The client should reduce the header size and resend the request. 451 Unavailable for Legal Reasons This response code occurs when the client requests a resource that has been removed due to legal reasons, such as a blocked site or page. This mostly affects Internet Service Providers (ISPs) and search engines. ### 5XX – Server error HTTP status codes 500 Internal Server Error This generic error code appears when the server encounters an unexpected issue that prevents it from completing the request. In many cases, server administrators log detailed information about the problem for troubleshooting. 501 Not Implemented This status means the server doesn’t support the functionality needed to complete the request. Servers only need to handle GET and HEAD methods by default. The response can include a Retry-After header, letting the client know when the functionality might be available. 502 Bad Gateway The gateway or proxy server gives this status code when it receives an invalid response while attempting to complete the request. If your site displays a [502 error](https://www.hostinger.com/tutorials/502-bad-gateway), you should contact your web host to fix it. 503 Service Unavailable This status means the server can’t handle the request due to temporary overload or maintenance. Check the response’s Retry-After header to see how long you should wait before trying again. 504 Gateway Timeout The gateway or proxy server sends this status code when it doesn’t get a timely response from the upstream server. If the [504 error](https://www.hostinger.com/tutorials/504-gateway-timeout) occurs on your website, check your hosting resources or try using a different browser to solve it. 505 HTTP Version Not Supported The server sends this code when it doesn’t support the HTTP version used in the request. The response will explain why that version doesn’t work and offer acceptable protocols. 506 Variant Also Negotiates This status code indicates a server configuration error. It happens when the chosen resource variant is set up for [content negotiation](https://www.javatpoint.com/http-content-negotiation) but isn’t a valid endpoint, causing a loop. 507 Insufficient Storage The server doesn’t have enough storage to complete the request. 508 Loop Detected This status means the server stopped an operation because it detected an infinite loop, causing the process to fail. 510 Not Extended This status code means the server needs further extensions to complete the request successfully. 511 Network Authentication Required The client must authenticate itself to access the network. The response usually includes a link to submit credentials. It addresses security issues with captive portals or the web pages users see before accessing public Wi-Fi networks. ## Understanding HTTP request and response HTTP defines request methods to tell the server what action to take with a resource. These methods share common features: safe, idempotent, or cacheable. Methods are considered safe if they don’t modify anything on the server and work on a read-only basis. Idempotent methods give the same result no matter how often you run them without unintended side effects. Cacheable methods allow browsers or proxies to save responses for reuse, improving efficiency. Here’s a list of standardized request methods commonly used in HTTP: - GET ‒ retrieves data from a resource. - HEAD ‒ requests the same response as GET but without a message body. - POST ‒ sends data to a resource, like submitting a form. - PUT ‒ replaces a resource or its representation entirely. - DELETE ‒ removes a resource. - OPTIONS ‒ shows the communication options for the resource. - TRACE ‒ tests the path of a request. - PATCH ‒ updates part of a resource. These request methods often connect with HTTP status codes, showing if the action succeeded or failed. For example, a GET request can return 200 OK if it works or 404 Not Found if the resource doesn’t exist. ## How to check a page’s HTTP status code Users rarely see status codes in the 1XX and 2XX categories. Instead, they usually encounter 3XX, 4XX, or 5XX status codes when something goes wrong. The easiest way to check a page’s HTTP status codes is to use your browser’s [Inspect Element](https://www.hostinger.com/tutorials/website/how-to-inspect-and-change-style-using-google-chrome) tool. If you’re on Chrome, right-click anywhere on the page and select Inspect. Then, select Network on the top menu. ![Chrome's Inspect Element, highlighting a page's HTTP status codes in the Network tab ](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2021/11/chrome-inspect-element.png/public) With [WebSniffer](https://websniffer.cc/), you can check a page’s HTTP request headers by selecting the request type (GET, POST, or HEAD) and client. This feature helps you see how the page loads on different browsers and even Googlebot. ![A page's HTTP response header shown in Websniffer ](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2021/11/websniffer.png/public) ## Important HTTP status code for SEO Search engine bots register all HTTP status codes while crawling your site and will use this information to determine its health and ranking. Let’s see some of the status codes that significantly impact your site’s SEO. ### 200: OK The 200 OK status positively impacts SEO because it signals to search engines that the page is accessible and working properly for visitors. It confirms the page is indexed, ranks in search results, and provides a smooth user experience. ### 301: Moved Permanently The 301 Moved Permanently status helps SEO by redirecting traffic from an old URL to a new one. It tells search engines the old page has moved, so they transfer its ranking and authority ‒ also known as [link equity](https://ahrefs.com/seo/glossary/link-equity) ‒ to the new page. This keeps your site’s SEO stable and avoids broken links. If you own a WordPress website, check out our dedicated tutorial on [creating 301 redirects](https://www.hostinger.com/tutorials/301-redirects-in-wordpress). As for best practices, make sure to: - Redirect relevant pages ‒ pick pages with similar content to maintain user experience and SEO value. - Update internal links ‒ replace old URLs with new ones in your site’s navigation, menus, and content so that visitors don’t come across broken links. - Check external links ‒ ask other sites that link to your old URL to update their links if possible. - Monitor redirects ‒ test your redirects to avoid chains or loops, which can slow down your site and confuse search engines. - Inform search engines ‒ submit an updated [sitemap](https://www.hostinger.com/tutorials/what-is-a-sitemap) to inform search engines about the new URL structure. #### Did you know? Hostinger’s [Managed WordPress hosting](https://www.hostinger.com/wordpress-hosting) lets you set up multiple redirects using hPanel in just a few clicks. ### 302: Found Since 302 Found is a temporary redirect, search engines assume the original URL will return and often keep it indexed. Using it for a permanent move can hurt your SEO as it splits ranking and authority between the old and new URLs. Therefore, only allow this status code for temporary situations, like during maintenance or testing. Replace it with 301 the moment the change becomes permanent. ### 404: Not Found The 404 Not Found response is bad news for SEO and user experience. Search engines might remove 404 pages from their index, which means lost traffic. If the page has backlinks, you could lose valuable SEO benefits. It can also frustrate visitors, causing them to leave and mistrust your site. Immediately fixing the error code is the best way to minimize the damage. It’s also a great practice to create a custom 404 error page, which you can populate with navigation links or information to keep visitors engaged. Hostinger users can set up custom error pages in hPanel by going to Website → Error Pages. Alternatively, use WordPress plugins like SeedProd or Smart Custom 404 Error Page to get the job done without coding. More importantly, regularly scan your website for 404 errors using Hostinger’s built-in [AI Troubleshooter](https://www.hostinger.com/blog/wordpress-ai-troubleshooter) or third-party tools like Google Search Console. #### Did you know? Available for Hostinger’s Managed WordPress Hosting users, AI Troubleshooter automatically detects and fixes common errors affecting the website, including 404. ### 410: Gone The 410 Gone status code can benefit your SEO when used on permanently removed pages. It’s more effective than 404 Not Found because it clearly tells search engines to remove the page from their index. However, using it on pages with valuable backlinks or significant traffic can result in lost link equity and SEO value. It can also confuse users if there’s no clear alternative to the page. Only use 410 for pages you want to remove permanently and don’t plan to replace. Better yet, redirect visitors and search engines to another relevant page using a 301. ### 500: Internal Server Error This status code can make it harder for search engines to crawl your site, leading to missed opportunities and unindexed pages. If the error lasts too long, search engines might view your site as unreliable, potentially affecting your rankings. For WordPress sites, bad plugins and a corrupted [.htaccess file](https://www.hostinger.com/tutorials/locate-and-create-htaccess) are common causes of a 500 Internal Server Error. Check out our tutorial on [fixing the 500 HTTP error](https://www.hostinger.com/tutorials/how-to-fix-500-internal-server-error-in-wordpress) for troubleshooting steps and contact your hosting provider if the error persists. ### 503: Service Unavailable The 503 Service Unavailable error means the server is temporarily down, usually due to maintenance or overload. Unlike the 500 error, it’s usually planned. While short-term 503 errors won’t hurt your SEO much, leaving them unresolved for too long can lead to lost traffic, higher bounce rates, and lower rankings. To fix it, finish up your maintenance or reduce the server load. You can also try other troubleshooting methods in our [503 Service Unavailable](https://www.hostinger.com/tutorials/503-service-unavailable) tutorial. If nothing works, check with your hosting provider to see if the problem is from their end. ## HTTP status codes FAQ ### How many HTTP status codes are there? The [IANA registry](https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml) lists status codes from 100 to 599. Only 63 are standardized and widely used, while the rest are unassigned. ### Should I check my site for HTTP status code errors? Absolutely! Checking for and solving HTTP status code errors helps improve your site’s performance and user experience and protects your search rankings. ### How do I fix 4XX and 5XX HTTP status code errors? Since 4XX errors come from the client side, check for URL typos or update permissions to resolve them. For 5XX server errors, review your server settings, logs, and resources. Contact your hosting provider if needed. All of the tutorial content on this website is subject to [Hostinger's rigorous editorial standards and values.](https://www.hostinger.com/tutorials/editorial-standards-and-values) ![Author](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2025/08/jojo-profile.jpeg/w=96,h=96,fit=scale-down) The author Jordana Alexandrea Jordana is a Senior Content Writer with a background in Information Systems. She has over five years of experience in WordPress and is casually dabbling with PHP and MySQL. Her passion for writing and technology drives her to create tutorials for anyone wanting to build their online presence. Follow her on [LinkedIn](https://www.linkedin.com/in/jordana-alexandrea/). [More from Jordana Alexandrea](https://www.hostinger.com/tutorials/author/jordana) ## Related tutorials [![Top 10 best European hosting providers: Key features and pricing](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2026/03/Tutorial-Cover-Hosting-performance-1-1.jpeg-1.jpeg/w=1024,h=1024,fit=scale-down)](https://www.hostinger.com/tutorials/best-european-hosting-providers) 31 Mar • [Hosting](https://www.hostinger.com/tutorials/hosting) • ##### [Top 10 best European hosting providers: Key features and pricing](https://www.hostinger.com/tutorials/best-european-hosting-providers) Choosing the best European hosting provider isn’t just about uptime – it’s about where your data is stored and how ... 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Readable Markdown	Oct 27, 2025 / Jordana A. / 13min read ![HTTP status codes: full list and explanations](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2021/11/how-to-fix-error-404-2.png/w=1110,h=454,fit=scale-down) HTTP response codes are three-digit numbers sent by a server to indicate the status of a browser’s request. Managed by the Internet Assigned Numbers Authority (IANA), these codes help identify whether a request was successful, redirected, or resulted in an error. If you’re managing a website, understanding these codes is useful for diagnosing site issues, minimizing downtime, and optimizing SEO. Keep reading as we cover 63 HTTP status codes, their meanings, and how to monitor them. ## HTTP status code categories When identifying an HTTP status code, focus on the first digit to determine its category. The last two digits provide specific details within that category. The [Internet Engineering Task Force (IETF)](https://www.ietf.org/) standardized HTTP status codes into five categories based on the server’s response to the browser: - 1XX (informational) – the server received the HTTP request and will continue the process. Status codes within this category are temporary, so they aren’t visible to the client. - 2XX (success) – the server received, understood, and processed the request. - 3XX (redirection) – the server received the request, but the requested content has moved. Therefore, it will redirect the client to another location. - 4XX (client error) – the server couldn’t complete the request because of a client-side issue, such as an authorization problem. The response explains whether the issue is temporary or permanent. - 5XX (server error) – a server-side issue prevents the request from being processed. Like 4XX, the response specifies if it’s a temporary or permanent issue. ## Complete list of HTTP status codes and explanation Here is the complete list of HTTP status codes from IEFT documentation: \| \| \| \|---\|---\| \| Status codes \| Functions \| \| [1XX Informational](https://www.hostinger.com/tutorials/http-status-codes#:~:text=1XX%20%E2%80%93%20Informational%20HTTP%20status%20codes) \| \| \| 100 \| Continue \| \| 101 \| Switching Protocols \| \| 102 \| Processing \| \| 103 \| Early Hints \| \| [2XX Successful](https://www.hostinger.com/tutorials/http-status-codes#:~:text=2XX%20%E2%80%93%20Successful%20HTTP%20status%20codes) \| \| \| 200 \| OK \| \| 201 \| Created \| \| 202 \| Accepted \| \| 203 \| Non-Authoritative Information \| \| 204 \| No Content \| \| 205 \| Reset Content \| \| 206 \| Partial Content \| \| 207 \| Multi-Status \| \| 208 \| Already Reported \| \| 226 \| IM Used \| \| [3XX Redirection](https://www.hostinger.com/tutorials/http-status-codes#:~:text=3XX%20%E2%80%93%20Redirection%20HTTP%20status%20codes) \| \| \| 300 \| Multiple Choices \| \| 301 \| Moved Permanently \| \| 302 \| Found \| \| 303 \| See Other \| \| 304 \| Not Modified \| \| 307 \| Temporary Redirect \| \| 308 \| Permanent Redirect \| \| [4XX Client Error](https://www.hostinger.com/tutorials/http-status-codes#:~:text=4XX%20%E2%80%93%20Client%20error%20HTTP%20status%20codes) \| \| \| 400 \| Bad Request \| \| 401 \| Unauthorized \| \| 402 \| Payment Required \| \| 403 \| Forbidden \| \| 404 \| Not Found \| \| 405 \| Method Not Allowed \| \| 406 \| Not Acceptable \| \| 407 \| Proxy Authentication Required \| \| 408 \| Request Timeout \| \| 409 \| Conflict \| \| 410 \| Gone \| \| 411 \| Length Required \| \| 412 \| Precondition Failed \| \| 413 \| Content Too Large \| \| 414 \| URI Too Long \| \| 415 \| Unsupported Media Type \| \| 416 \| Range Not Satisfiable \| \| 417 \| Expectation Failed \| \| 418 \| I’m a Teapot \| \| 421 \| Misdirected Request \| \| 422 \| Unprocessable Entity \| \| 423 \| Locked \| \| 424 \| Failed Dependency \| \| 425 \| Too Early \| \| 426 \| Upgrade Required \| \| 428 \| Precondition Required \| \| 429 \| Too Many Requests \| \| 431 \| Request Header Fields Too Large \| \| 451 \| Unavailable for Legal Reasons \| \| [5XX Server Error](https://www.hostinger.com/tutorials/http-status-codes#:~:text=5XX%20%E2%80%93%20Server%20error%20HTTP%20status%20codes) \| \| \| 500 \| Internal Server Error \| \| 501 \| Not Implemented \| \| 502 \| Bad Gateway \| \| 503 \| Service Unavailable \| \| 504 \| Gateway Timeout \| \| 505 \| HTTP Version Not Supported \| \| 506 \| Variant Also Negotiates \| \| 507 \| Insufficient Storage \| \| 508 \| Loop Detected \| \| 510 \| Not Extended \| \| 511 \| Network Authentication Required \| 305 Use Proxy and 306 Switch Proxy have been deprecated but are still reserved. Additionally, codes outside these categories may be unofficial, not yet adopted, or specific to certain platforms or services. For example, Cloudflare uses the [521 Web Server Is Down](https://www.hostinger.com/tutorials/error-521) status code for connection errors. ### 1XX – Informational HTTP status codes 100 ContinueThis status code indicates that the server has received the initial part of the request. The client should continue sending the rest of the request and ignore this status code. 101 Switching ProtocolsThe server agrees to switch to the protocol specified in the Upgrade header. This response only happens if the change is beneficial. 102 ProcessingThe status code means that the server is still processing the request. It usually appears when a request takes a long time to complete. 103 Early HintsThis response code allows the browser to preload resources using the Link header while the server prepares the final response. ### 2XX – Successful HTTP status codes 200 OK This status code indicates that the request has succeeded. However, the actual meaning of this response depends on the request method used (GET, HEAD, POST, PUT, DELETE, OPTIONS, or TRACE). We’ll dive into all the HTTP methods later in the article. 201 Created This status code is a typical response sent after a POST or PUT method. It indicates that the server has completed the request and is creating one or more new resources, identified by a Location header or the target URI. 202 Accepted The server has accepted the request but hasn’t processed it yet. This non-committal status allows the server to handle the request later without requiring the client to stay connected, making it ideal for batch processing. 203 Non-Authoritative Information This status code means the request was successful, but a proxy modified the response data from the origin server. It’s commonly used when the server retrieves data from a cache or third-party source, notifying recipients of potential changes to the original content, like in backups or mirrored resources. 204 No Content This status code means that the server successfully processed the request but has no content to send in the response. It’s used for actions that don’t require updating the browser’s current view. 205 Reset Content The request was successful, and the client should reset the document view ‒ a notepad, form, or canvas ‒ to its default state. 206 Partial ContentThis status code is sent when a client requests part of a resource using the Range header, which reduces bandwidth usage and improves performance. It commonly happens when resuming interrupted downloads, streaming media files, handling large file transfers in chunks, and fetching specific data segments during synchronization. 207 Multi-Status This status code provides the status of multiple resources in a single response. The XML message body typically includes a multi-status root element detailing each resource’s success, partial success, or failure. 208 Already Reported This status code is used inside a [DAV:propstat](http://webdav.org/specs/rfc2518.html) response element to avoid listing duplicate internal members of collections. Only one resource reports a 200 OK status, while duplicates use 208. 226 IM Used The server successfully processed a GET request and applied one or more [instance manipulations](https://www.iana.org/assignments/inst-man-values/inst-man-values.xhtml) to the resource in the response. ### 3XX – Redirection HTTP status codes 300 Multiple Choices This status code indicates that multiple responses are available, and the client must choose one. For example, it can happen when a resource has multiple language versions, such as English and French. The response includes a list of options with resource details and locations. If the server has a preferred choice, it provides a Location header for automatic redirection. 301 Moved Permanently This status code means the requested resource has been permanently moved to a new URL. All future requests should use the new address provided in the response. The server’s response usually includes a link to the new URL, except for HEAD requests. For methods other than GET and HEAD, redirection only happens if the client allows it. 302 Found This status code means that the requested resource is temporarily available at a different URI. Future requests should continue to use the original address unless otherwise directed. For non-HEAD requests, the server’s response usually includes a link to the temporary URI. Redirection only occurs if the client allows it. Check out our [302 error](https://www.hostinger.com/tutorials/302-found-error) tutorial for troubleshooting methods and common use cases. 303 See Other This status code redirects the client to a different resource using the GET method. It means the server cannot provide the requested resource directly. For example, after submitting a form, the server redirects the client to a confirmation page instead of showing the result directly. 304 Not Modified This status code means the requested resource hasn’t changed, so the client can use its cached version. It’s typically triggered by GET or HEAD requests with conditional headers like If-None-Match or If-Modified-Since. Check out our tutorial on the [304 status code](https://www.hostinger.com/tutorials/304-status-code) for more details and troubleshooting steps. 307 Temporary Redirect The server sends this status code to redirect the client to another URI temporarily. Since it is temporary, the client may need to use the original address in the future. Unlike 302 Found, the client must keep the same HTTP method during the redirect. 308 Permanent Redirect This status code indicates the resource has permanently moved to a new URI in the HTTP header. It has the same semantics as 301 Moved Permanently, except that 308 Permanent Redirect doesn’t allow the client to change the request method. ### 4XX – Client error HTTP status codes 400 Bad Request This status code means the server couldn’t process the request due to a client-side error, like invalid syntax or routing. To fix a [400 error](https://www.hostinger.com/tutorials/how-to-fix-400-bad-request-error), check the URL and clear your browser’s cache and cookies. 401 Unauthorized The server rejected the request due to missing or invalid user authentication. If the request included credentials, it indicates the server refused to authorize them. The response usually comes with a WWW-Authenticate header containing instructions to access the resource. If you come across a [401 error](https://www.hostinger.com/tutorials/how-to-fix-the-401-unauthorized-error), check out our dedicated tutorial for troubleshooting steps. 402 Payment Required This non-standard status code was intended for digital payment systems. However, it’s rarely used, and there are no clear rules for it. 403 Forbidden The server understood the request but denied access, usually due to insufficient permissions. Re-authentication won’t resolve a [403 error](https://www.hostinger.com/tutorials/what-is-403-forbidden-error-and-how-to-fix-it), as access is permanently restricted. The client can try again with different credentials. 404 Not Found This status code means that the server can’t find the requested resource and has no forwarding address. In a browser, it means the link is missing or unrecognized. In an API, it indicates the endpoint exists, but the resource doesn’t. Links that return a [404 error](https://www.hostinger.com/tutorials/how-to-fix-error-404) are called broken or dead links, which can be temporary or permanent. 405 Method Not Allowed The origin server recognizes the request method, but the resource doesn’t support it. The response usually includes an Allow header listing the supported methods. To fix a [405 error](https://www.hostinger.com/tutorials/error-405-method-not-allowed), check the URL and review any database changes. 406 Not Acceptable The server sends this invalid response when it doesn’t find any content that matches the criteria in the request’s Accept headers. The server will provide a list of available options so the client can choose the most suitable one. 407 Proxy Authentication Required The server displays this code when using a proxy. The client must provide valid authentication credentials to access the requested resource. Unlike 401 Unauthorized, the client must authenticate with the specified proxy server instead of the origin server. 408 Request TimeoutThis status code means the server didn’t receive the full request within the allowed time. The response usually suggests closing the unused connection. To fix it, the client can resend the request without changes. This error can occur in browsers like Chrome and Firefox, which use pre-connection to speed up loading. 409 Conflict The server can’t process the request due to a conflict with the resource. It provides details about the issue so the client can fix it and try again, usually with a PUT request. 410 GoneThis response code means the resource is permanently unavailable without any forwarding address. When this occurs, search engines will remove the page from their index. It shows the site owner intentionally made the resource unavailable and wants to remove any links to it. 411 Length Required The server rejected the request because it needs a Content-Length header. 412 Precondition Failed This invalid response shows the server couldn’t meet one or more conditions specified in the request headers. 413 Payload Too Large The server usually sends this error code when a request is too large to process. To fix a [413 error](https://www.hostinger.com/tutorials/413-request-entity-too-large-error), the server might close the connection and include a Retry-After header, encouraging the client to try again later. 414 URI Too Long This status code means the request URI is too long for the server to process. While it’s rare, it can happen if a client converts a POST request into a GET request with too much query information, enters a redirection loop, or attempts to exploit server vulnerabilities. 415 Unsupported Media Type The server rejected the request because the resource uses an unsupported media format. This error code can also appear if the data compression method isn’t supported or if the content doesn’t meet the server’s expectations or rules. 416 Range Not Satisfiable The server sends this status code when it can’t process the range specified in the request. It happens when the range doesn’t exist in the resource or the value is invalid. 417 Expectation FailedThis status means the server can’t meet the requirements specified in the request’s Expect header. 418 I’m a Teapot This status code references an April Fools’ Day joke called the Hyper Text Coffee Pot Control Protocol, indicating that the server is a teapot and, therefore, can’t brew coffee. Some websites use it for requests they want to avoid. 421 Misdirected Request This status code happens when the client sends a request to the wrong server, which can’t respond to the given URL. The user can retry the request using a different connection or service. 422 Unprocessable Entity The server received the request but can’t process it due to issues like semantic errors, such as entering text in a form’s numeric field. 423 Locked This status means the resource is locked. The response often includes details about the lock. 424 Failed Dependency The request failed because it depended on a previous request that also failed. 425 Too Early The server refuses to process the request because it might be repeated later. 426 Upgrade Required The server won’t process the request unless the client switches to the required protocol stated in the Upgrade header. 428 Precondition Required This status code means that the server needs a conditional request so that the client is using the correct version of the resource. 429 Too Many Requests The [429 error](https://www.hostinger.com/tutorials/429-too-many-requests-error) occurs when the client sends too many requests in a short time. The server may include a Retry-After header to tell the client how long to wait before trying again. 431 Request Header Fields Too Large The server sends this status code when the request headers are too big to process. The client should reduce the header size and resend the request. 451 Unavailable for Legal Reasons This response code occurs when the client requests a resource that has been removed due to legal reasons, such as a blocked site or page. This mostly affects Internet Service Providers (ISPs) and search engines. ### 5XX – Server error HTTP status codes 500 Internal Server Error This generic error code appears when the server encounters an unexpected issue that prevents it from completing the request. In many cases, server administrators log detailed information about the problem for troubleshooting. 501 Not Implemented This status means the server doesn’t support the functionality needed to complete the request. Servers only need to handle GET and HEAD methods by default. The response can include a Retry-After header, letting the client know when the functionality might be available. 502 Bad Gateway The gateway or proxy server gives this status code when it receives an invalid response while attempting to complete the request. If your site displays a [502 error](https://www.hostinger.com/tutorials/502-bad-gateway), you should contact your web host to fix it. 503 Service Unavailable This status means the server can’t handle the request due to temporary overload or maintenance. Check the response’s Retry-After header to see how long you should wait before trying again. 504 Gateway Timeout The gateway or proxy server sends this status code when it doesn’t get a timely response from the upstream server. If the [504 error](https://www.hostinger.com/tutorials/504-gateway-timeout) occurs on your website, check your hosting resources or try using a different browser to solve it. 505 HTTP Version Not Supported The server sends this code when it doesn’t support the HTTP version used in the request. The response will explain why that version doesn’t work and offer acceptable protocols. 506 Variant Also Negotiates This status code indicates a server configuration error. It happens when the chosen resource variant is set up for [content negotiation](https://www.javatpoint.com/http-content-negotiation) but isn’t a valid endpoint, causing a loop. 507 Insufficient Storage The server doesn’t have enough storage to complete the request. 508 Loop Detected This status means the server stopped an operation because it detected an infinite loop, causing the process to fail. 510 Not Extended This status code means the server needs further extensions to complete the request successfully. 511 Network Authentication Required The client must authenticate itself to access the network. The response usually includes a link to submit credentials. It addresses security issues with captive portals or the web pages users see before accessing public Wi-Fi networks. ## Understanding HTTP request and response HTTP defines request methods to tell the server what action to take with a resource. These methods share common features: safe, idempotent, or cacheable. Methods are considered safe if they don’t modify anything on the server and work on a read-only basis. Idempotent methods give the same result no matter how often you run them without unintended side effects. Cacheable methods allow browsers or proxies to save responses for reuse, improving efficiency. Here’s a list of standardized request methods commonly used in HTTP: - GET ‒ retrieves data from a resource. - HEAD ‒ requests the same response as GET but without a message body. - POST ‒ sends data to a resource, like submitting a form. - PUT ‒ replaces a resource or its representation entirely. - DELETE ‒ removes a resource. - OPTIONS ‒ shows the communication options for the resource. - TRACE ‒ tests the path of a request. - PATCH ‒ updates part of a resource. These request methods often connect with HTTP status codes, showing if the action succeeded or failed. For example, a GET request can return 200 OK if it works or 404 Not Found if the resource doesn’t exist. ## How to check a page’s HTTP status code Users rarely see status codes in the 1XX and 2XX categories. Instead, they usually encounter 3XX, 4XX, or 5XX status codes when something goes wrong. The easiest way to check a page’s HTTP status codes is to use your browser’s [Inspect Element](https://www.hostinger.com/tutorials/website/how-to-inspect-and-change-style-using-google-chrome) tool. If you’re on Chrome, right-click anywhere on the page and select Inspect. Then, select Network on the top menu. ![Chrome's Inspect Element, highlighting a page's HTTP status codes in the Network tab ](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2021/11/chrome-inspect-element.png/public) With [WebSniffer](https://websniffer.cc/), you can check a page’s HTTP request headers by selecting the request type (GET, POST, or HEAD) and client. This feature helps you see how the page loads on different browsers and even Googlebot. ![A page's HTTP response header shown in Websniffer ](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2021/11/websniffer.png/public) ## Important HTTP status code for SEO Search engine bots register all HTTP status codes while crawling your site and will use this information to determine its health and ranking. Let’s see some of the status codes that significantly impact your site’s SEO. ### 200: OK The 200 OK status positively impacts SEO because it signals to search engines that the page is accessible and working properly for visitors. It confirms the page is indexed, ranks in search results, and provides a smooth user experience. ### 301: Moved Permanently The 301 Moved Permanently status helps SEO by redirecting traffic from an old URL to a new one. It tells search engines the old page has moved, so they transfer its ranking and authority ‒ also known as [link equity](https://ahrefs.com/seo/glossary/link-equity) ‒ to the new page. This keeps your site’s SEO stable and avoids broken links. If you own a WordPress website, check out our dedicated tutorial on [creating 301 redirects](https://www.hostinger.com/tutorials/301-redirects-in-wordpress). As for best practices, make sure to: - Redirect relevant pages ‒ pick pages with similar content to maintain user experience and SEO value. - Update internal links ‒ replace old URLs with new ones in your site’s navigation, menus, and content so that visitors don’t come across broken links. - Check external links ‒ ask other sites that link to your old URL to update their links if possible. - Monitor redirects ‒ test your redirects to avoid chains or loops, which can slow down your site and confuse search engines. - Inform search engines ‒ submit an updated [sitemap](https://www.hostinger.com/tutorials/what-is-a-sitemap) to inform search engines about the new URL structure. ### 302: Found Since 302 Found is a temporary redirect, search engines assume the original URL will return and often keep it indexed. Using it for a permanent move can hurt your SEO as it splits ranking and authority between the old and new URLs. Therefore, only allow this status code for temporary situations, like during maintenance or testing. Replace it with 301 the moment the change becomes permanent. ### 404: Not Found The 404 Not Found response is bad news for SEO and user experience. Search engines might remove 404 pages from their index, which means lost traffic. If the page has backlinks, you could lose valuable SEO benefits. It can also frustrate visitors, causing them to leave and mistrust your site. Immediately fixing the error code is the best way to minimize the damage. It’s also a great practice to create a custom 404 error page, which you can populate with navigation links or information to keep visitors engaged. Hostinger users can set up custom error pages in hPanel by going to Website → Error Pages. Alternatively, use WordPress plugins like SeedProd or Smart Custom 404 Error Page to get the job done without coding. More importantly, regularly scan your website for 404 errors using Hostinger’s built-in [AI Troubleshooter](https://www.hostinger.com/blog/wordpress-ai-troubleshooter) or third-party tools like Google Search Console. #### Did you know? Available for Hostinger’s Managed WordPress Hosting users, AI Troubleshooter automatically detects and fixes common errors affecting the website, including 404. ### 410: Gone The 410 Gone status code can benefit your SEO when used on permanently removed pages. It’s more effective than 404 Not Found because it clearly tells search engines to remove the page from their index. However, using it on pages with valuable backlinks or significant traffic can result in lost link equity and SEO value. It can also confuse users if there’s no clear alternative to the page. Only use 410 for pages you want to remove permanently and don’t plan to replace. Better yet, redirect visitors and search engines to another relevant page using a 301. ### 500: Internal Server Error This status code can make it harder for search engines to crawl your site, leading to missed opportunities and unindexed pages. If the error lasts too long, search engines might view your site as unreliable, potentially affecting your rankings. For WordPress sites, bad plugins and a corrupted [.htaccess file](https://www.hostinger.com/tutorials/locate-and-create-htaccess) are common causes of a 500 Internal Server Error. Check out our tutorial on [fixing the 500 HTTP error](https://www.hostinger.com/tutorials/how-to-fix-500-internal-server-error-in-wordpress) for troubleshooting steps and contact your hosting provider if the error persists. ### 503: Service Unavailable The 503 Service Unavailable error means the server is temporarily down, usually due to maintenance or overload. Unlike the 500 error, it’s usually planned. While short-term 503 errors won’t hurt your SEO much, leaving them unresolved for too long can lead to lost traffic, higher bounce rates, and lower rankings. To fix it, finish up your maintenance or reduce the server load. You can also try other troubleshooting methods in our [503 Service Unavailable](https://www.hostinger.com/tutorials/503-service-unavailable) tutorial. If nothing works, check with your hosting provider to see if the problem is from their end. ## HTTP status codes FAQ ### How many HTTP status codes are there? The [IANA registry](https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml) lists status codes from 100 to 599. Only 63 are standardized and widely used, while the rest are unassigned. ### Should I check my site for HTTP status code errors? Absolutely! Checking for and solving HTTP status code errors helps improve your site’s performance and user experience and protects your search rankings. ### How do I fix 4XX and 5XX HTTP status code errors? Since 4XX errors come from the client side, check for URL typos or update permissions to resolve them. For 5XX server errors, review your server settings, logs, and resources. Contact your hosting provider if needed. All of the tutorial content on this website is subject to [Hostinger's rigorous editorial standards and values.](https://www.hostinger.com/tutorials/editorial-standards-and-values) ![Author](https://imagedelivery.net/LqiWLm-3MGbYHtFuUbcBtA/wp-content/uploads/sites/2/2025/08/jojo-profile.jpeg/w=96,h=96,fit=scale-down) Jordana is a Senior Content Writer with a background in Information Systems. She has over five years of experience in WordPress and is casually dabbling with PHP and MySQL. Her passion for writing and technology drives her to create tutorials for anyone wanting to build their online presence. Follow her on [LinkedIn](https://www.linkedin.com/in/jordana-alexandrea/).
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