Crawler Inspector

1. Shard Calculation

Query:

Response:

Calculated Shard: 51 (from laksa184)

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, 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.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA\'))) FORMAT JSONEachRow'

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	3.6 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	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Property	Value
URL	https://www.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA
Last Crawled	2025-12-23 06:31:25 (3 months ago)
First Indexed	not set
HTTP Status Code	200
Meta Title	The Organic Chemistry Tutor - YouTube
Meta Description	This channel focuses on providing tutorial videos on organic chemistry, general chemistry, physics, algebra, trigonometry, precalculus, and calculus.Disclaim...
Meta Canonical	null
Boilerpipe Text	Include playlist An error occurred while retrieving sharing information. Please try again later.
Markdown	null
Readable Markdown	null
Shard	51 (laksa)
Root Hash	3907445400264388851
Unparsed URL	com,youtube!www,/channel/UCEWpbFLzoYGPfuWUMFPSaoA s443

🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

1. Shard Calculation

Query:

Response:

2. Crawled Status Check

Query:

Response:

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

Page Info Filters

Page Details