🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 129 (from laksa044)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa129.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 = 63 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://pmc.ncbi.nlm.nih.gov/articles/PMC8539581/\')), getAhrefsUnparsedNoserviceFromURL(\'https://pmc.ncbi.nlm.nih.gov/articles/PMC8539581/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC8539581\/","crawl_time":1773768220,"first_indexed_time":0,"http_code":200,"src_unparsed":"gov,nih!nlm,ncbi,pmc,\/articles\/PMC8539581\/ s443","src_root_hash":"7295144728021232729","history_drop_reason":null,"meta_title":"Does the EU COVID Digital Certificate Strike a Reasonable Balance between Mobility Needs and Public Health? - PMC","meta_descriptions":["The need to fight a highly aggressive virus such as SARS-CoV-2 has compelled governments to put in place measures, which, in the name of health protection, have constrained many freedoms we all enjoy, including freedom of movement, both nationally ..."],"meta_canonical":null,"ml_categories_json":"{\"\/Law_and_Government\":742,\"\/Health\":681,\"\/Health\/Public_Health\":671,\"\/Health\/Public_Health\/Health_Policy\":669,\"\/Law_and_Government\/Legal\":405,\"\/Law_and_Government\/Legal\/Constitutional_Law_and_Civil_Rights\":372,\"\/People_and_Society\":242,\"\/People_and_Society\/Social_Issues_and_Advocacy\":224}","ml_types_json":"{\"\/Article\":967,\"\/Article\/Opinion_Piece\":798}","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":"6906","attrs_boilerpipe_nr_words":"6215","body_ext_links_number":129,"body_int_links_number":82,"meta_nofollow":1,"meta_noarchive":1,"props_was_rendered":0,"src_redirect":"","download_time_msec":127,"download_ttfb_msec":125,"download_size":47632}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 129 · Partition 63

laksa129

7295144728021232729

📄

INDEXABLE

✅

CRAWLED

2 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`	2.6 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://pmc.ncbi.nlm.nih.gov/articles/PMC8539581/

Last Crawled

2026-03-17 17:23:40 (2 months ago)

First Indexed

not set

HTTP Status Code

200

Content

Meta Title

Does the EU COVID Digital Certificate Strike a Reasonable Balance between Mobility Needs and Public Health? - PMC

Meta Description

The need to fight a highly aggressive virus such as SARS-CoV-2 has compelled governments to put in place measures, which, in the name of health protection, have constrained many freedoms we all enjoy, including freedom of movement, both nationally ...

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

/Law_and_Government		74.2%
/Health		68.1%
/Health/Public_Health		67.1%
/Health/Public_Health/Health_Policy		66.9%
/Law_and_Government/Legal		40.5%
/Law_and_Government/Legal/Constitutional_Law_and_Civil_Rights		37.2%
/People_and_Society		24.2%
/People_and_Society/Social_Issues_and_Advocacy		22.4%

Raw JSON

{
    "/Law_and_Government": 742,
    "/Health": 681,
    "/Health/Public_Health": 671,
    "/Health/Public_Health/Health_Policy": 669,
    "/Law_and_Government/Legal": 405,
    "/Law_and_Government/Legal/Constitutional_Law_and_Civil_Rights": 372,
    "/People_and_Society": 242,
    "/People_and_Society/Social_Issues_and_Advocacy": 224
}

ML Page Types

/Article		96.7%
/Article/Opinion_Piece		79.8%

Raw JSON

{
    "/Article": 967,
    "/Article/Opinion_Piece": 798
}

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)

6,906

Word Count (Content)

6,215

Links

External Links

129

Internal Links

Technical SEO

Meta Nofollow

Yes

Meta Noarchive

Yes

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

127

TTFB (ms)

125

Download Size (bytes)

47,632

Location

Host ID

129 (laksa129)

Partition ID

Root Hash

7295144728021232729

Unparsed URL

gov,nih!nlm,ncbi,pmc,/articles/PMC8539581/ s443