🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 53 (from laksa178)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa053.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, meta_canonical AS meta_canonical, ml_categories_json AS ml_categories_json, ml_types_json AS ml_types_json, ml_intent_types_json AS ml_intent_types_json, meta_language AS meta_language, attrs_author AS attrs_author, ifNull(toUnixTimestamp(attrs_publish_time), 0) AS attrs_publish_time, ifNull(toUnixTimestamp(attrs_original_publish_time), 0) AS attrs_original_publish_time, ifNull(attrs_is_republished, 0) AS attrs_is_republished, ifNull(attrs_nr_words, 0) AS attrs_nr_words, ifNull(attrs_boilerpipe_nr_words, 0) AS attrs_boilerpipe_nr_words, ifNull(body_ext_links_number, 0) AS body_ext_links_number, ifNull(body_int_links_number, 0) AS body_int_links_number, ifNull(meta_nofollow, 0) AS meta_nofollow, ifNull(meta_noarchive, 0) AS meta_noarchive, ifNull(props_was_rendered, 0) AS props_was_rendered, ifNull(src_redirect, \'\') AS src_redirect, ifNull(download_time_msec, 0) AS download_time_msec, ifNull(download_ttfb_msec, 0) AS download_ttfb_msec, ifNull(download_size, 0) AS download_size FROM crawler3.page_info_local FINAL PREWHERE int_partition_id = 28 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://developer.mozilla.org/en-US/docs/Web/API/Element/classList\')), getAhrefsUnparsedNoserviceFromURL(\'https://developer.mozilla.org/en-US/docs/Web/API/Element/classList\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Element\/classList","crawl_time":1776128577,"first_indexed_time":1426000316,"http_code":200,"src_unparsed":"org,mozilla!developer,\/en-US\/docs\/Web\/API\/Element\/classList s443","src_root_hash":"7082249407640205653","history_drop_reason":null,"meta_title":"Element: classList property - Web APIs | MDN","meta_descriptions":["The read-only classList property of the Element interface contains a live DOMTokenList collection representing the class attribute of the element. This can then be used to manipulate the class list."],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":867,\"\/Computers_and_Electronics\/Software\":678,\"\/Computers_and_Electronics\/Software\/Internet_Software\":537,\"\/Internet_and_Telecom\":482,\"\/Internet_and_Telecom\/Web_Services\":479,\"\/Internet_and_Telecom\/Web_Services\/Web_Design_and_Development\":469}","ml_types_json":"{\"\/Article\":537,\"\/Article\/Tutorial_or_Guide\":342}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en-us","attrs_author":null,"attrs_publish_time":1764093077,"attrs_original_publish_time":1426000316,"attrs_is_republished":1,"attrs_nr_words":"903","attrs_boilerpipe_nr_words":"184","body_ext_links_number":14,"body_int_links_number":384,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":214,"download_ttfb_msec":206,"download_size":19169}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 53 · Partition 28

laksa053

7082249407640205653

📄

INDEXABLE

✅

CRAWLED

1 month ago

🤖

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`	1.7 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://developer.mozilla.org/en-US/docs/Web/API/Element/classList

Last Crawled

2026-04-14 01:02:57 (1 month ago)

First Indexed

2015-03-10 15:11:56 (11 years ago)

HTTP Status Code

200

Content

Meta Title

Element: classList property - Web APIs | MDN

Meta Description

The read-only classList property of the Element interface contains a live DOMTokenList collection representing the class attribute of the element. This can then be used to manipulate the class list.

Meta Canonical

null

Boilerpipe Text

heavy column, fetched on demand

Markdown

heavy column, fetched on demand

Readable Markdown

heavy column, fetched on demand

ML Classification

ML Categories

/Computers_and_Electronics		86.7%
/Computers_and_Electronics/Software		67.8%
/Computers_and_Electronics/Software/Internet_Software		53.7%
/Internet_and_Telecom		48.2%
/Internet_and_Telecom/Web_Services		47.9%
/Internet_and_Telecom/Web_Services/Web_Design_and_Development		46.9%

Raw JSON

{
    "/Computers_and_Electronics": 867,
    "/Computers_and_Electronics/Software": 678,
    "/Computers_and_Electronics/Software/Internet_Software": 537,
    "/Internet_and_Telecom": 482,
    "/Internet_and_Telecom/Web_Services": 479,
    "/Internet_and_Telecom/Web_Services/Web_Design_and_Development": 469
}

ML Page Types

/Article		53.7%
/Article/Tutorial_or_Guide		34.2%

Raw JSON

{
    "/Article": 537,
    "/Article/Tutorial_or_Guide": 342
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

en-us

Author

null

Publish Time

2025-11-25 17:51:17 (6 months ago)

Original Publish Time

2015-03-10 15:11:56 (11 years ago)

Republished

Yes

Word Count (Total)

903

Word Count (Content)

184

Links

External Links

Internal Links

384

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

214

TTFB (ms)

206

Download Size (bytes)

19,169

Location

Host ID

53 (laksa053)

Partition ID

Root Hash

7082249407640205653

Unparsed URL

org,mozilla!developer,/en-US/docs/Web/API/Element/classList s443