🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 51 (from laksa145)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa051.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 = 44 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.youtube.com/howyoutubeworks/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.youtube.com/howyoutubeworks/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.youtube.com\/howyoutubeworks\/","crawl_time":1769185740,"first_indexed_time":0,"http_code":200,"src_unparsed":"com,youtube!www,\/howyoutubeworks\/ s443","src_root_hash":"3907445400264388851","history_drop_reason":null,"meta_title":"How YouTube works: Giving everyone a voice","meta_descriptions":["YouTube is home to unique voices and an array of content. Understand how YouTube works, from protecting user privacy to amplifying voices globally."],"meta_canonical":"com,youtube!www,\/intl\/ALL_uk\/howyoutubeworks\/ s443","ml_categories_json":"{\"\/People_and_Society\":769,\"\/People_and_Society\/Social_Issues_and_Advocacy\":556,\"\/Internet_and_Telecom\":511,\"\/Internet_and_Telecom\/Web_Services\":483,\"\/People_and_Society\/Social_Issues_and_Advocacy\/Human_Rights_and_Liberties\":401,\"\/Internet_and_Telecom\/Web_Services\/Other\":316,\"\/Arts_and_Entertainment\":129,\"\/Arts_and_Entertainment\/Online_Media\":116,\"\/Arts_and_Entertainment\/Online_Media\/Other\":109}","ml_types_json":"{\"\/Article\":500,\"\/Article\/Thought_Leadership\":129}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":0,"attrs_is_republished":0,"attrs_nr_words":"550","attrs_boilerpipe_nr_words":"227","body_ext_links_number":0,"body_int_links_number":1,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":21,"download_ttfb_msec":21,"download_size":6503}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 51 · Partition 44

laksa051

3907445400264388851

🚫

NOT INDEXABLE

✅

CRAWLED

4 months 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`	4.4 months ago (distributed domain, exempt)
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	FAIL	`meta_canonical IS NULL OR = '' OR = src_unparsed`	com,youtube!www,/intl/ALL_uk/howyoutubeworks/ s443

Page Details

Property

Value

URL

https://www.youtube.com/howyoutubeworks/

Last Crawled

2026-01-23 16:29:00 (4 months ago)

First Indexed

not set

HTTP Status Code

200

Content

Meta Title

How YouTube works: Giving everyone a voice

Meta Description

YouTube is home to unique voices and an array of content. Understand how YouTube works, from protecting user privacy to amplifying voices globally.

Meta Canonical

com,youtube!www,/intl/ALL_uk/howyoutubeworks/ s443

Boilerpipe Text

heavy column, fetched on demand

Markdown

heavy column, fetched on demand

Readable Markdown

heavy column, fetched on demand

ML Classification

ML Categories

/People_and_Society		76.9%
/People_and_Society/Social_Issues_and_Advocacy		55.6%
/Internet_and_Telecom		51.1%
/Internet_and_Telecom/Web_Services		48.3%
/People_and_Society/Social_Issues_and_Advocacy/Human_Rights_and_Liberties		40.1%
/Internet_and_Telecom/Web_Services/Other		31.6%
/Arts_and_Entertainment		12.9%
/Arts_and_Entertainment/Online_Media		11.6%
/Arts_and_Entertainment/Online_Media/Other		10.9%

Raw JSON

{
    "/People_and_Society": 769,
    "/People_and_Society/Social_Issues_and_Advocacy": 556,
    "/Internet_and_Telecom": 511,
    "/Internet_and_Telecom/Web_Services": 483,
    "/People_and_Society/Social_Issues_and_Advocacy/Human_Rights_and_Liberties": 401,
    "/Internet_and_Telecom/Web_Services/Other": 316,
    "/Arts_and_Entertainment": 129,
    "/Arts_and_Entertainment/Online_Media": 116,
    "/Arts_and_Entertainment/Online_Media/Other": 109
}

ML Page Types

/Article		50.0%
/Article/Thought_Leadership		12.9%

Raw JSON

{
    "/Article": 500,
    "/Article/Thought_Leadership": 129
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

not set

Original Publish Time

not set

Republished

Word Count (Total)

550

Word Count (Content)

227

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

TTFB (ms)

Download Size (bytes)

6,503

Location

Host ID

51 (laksa051)

Partition ID

Root Hash

3907445400264388851

Unparsed URL

com,youtube!www,/howyoutubeworks/ s443