🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 129 (from laksa089)

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/PMC3133860/\')), getAhrefsUnparsedNoserviceFromURL(\'https://pmc.ncbi.nlm.nih.gov/articles/PMC3133860/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC3133860\/","crawl_time":1758432667,"first_indexed_time":0,"http_code":200,"src_unparsed":"gov,nih!nlm,ncbi,pmc,\/articles\/PMC3133860\/ s443","src_root_hash":"7295144728021232729","history_drop_reason":null,"meta_title":"New variable selection methods for zero-inflated count data with applications to the substance abuse field - PMC","meta_descriptions":["Zero-inflated count data are very common in health surveys. This study develops new variable selection methods for the zero-inflated Poisson regression model. Our simulations demonstrate the negative consequences which arise from the ignorance of ..."],"meta_canonical":null,"ml_categories_json":"{\"\/Health\":858,\"\/Science\":782,\"\/Health\/Substance_Abuse\":509,\"\/Science\/Biological_Sciences\":483,\"\/Health\/Substance_Abuse\/Drug_and_Alcohol_Treatment\":340,\"\/Science\/Biological_Sciences\/Other\":321}","ml_types_json":"{\"\/Article\":849,\"\/Article\/Study_or_Research_Findings\":844}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1758432667,"attrs_is_republished":0,"attrs_nr_words":"11129","attrs_boilerpipe_nr_words":"8042","body_ext_links_number":83,"body_int_links_number":63,"meta_nofollow":1,"meta_noarchive":1,"props_was_rendered":0,"src_redirect":"","download_time_msec":178,"download_ttfb_msec":160,"download_size":58957}

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

🚫

NOT INDEXABLE

✅

CRAWLED

8 months ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	FAIL	`download_stamp > now() - 6 MONTH`	8.5 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/PMC3133860/

Last Crawled

2025-09-21 05:31:07 (8 months ago)

First Indexed

not set

HTTP Status Code

200

Content

Meta Title

New variable selection methods for zero-inflated count data with applications to the substance abuse field - PMC

Meta Description

Zero-inflated count data are very common in health surveys. This study develops new variable selection methods for the zero-inflated Poisson regression model. Our simulations demonstrate the negative consequences which arise from the ignorance of ...

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

/Health		85.8%
/Science		78.2%
/Health/Substance_Abuse		50.9%
/Science/Biological_Sciences		48.3%
/Health/Substance_Abuse/Drug_and_Alcohol_Treatment		34.0%
/Science/Biological_Sciences/Other		32.1%

Raw JSON

{
    "/Health": 858,
    "/Science": 782,
    "/Health/Substance_Abuse": 509,
    "/Science/Biological_Sciences": 483,
    "/Health/Substance_Abuse/Drug_and_Alcohol_Treatment": 340,
    "/Science/Biological_Sciences/Other": 321
}

ML Page Types

/Article		84.9%
/Article/Study_or_Research_Findings		84.4%

Raw JSON

{
    "/Article": 849,
    "/Article/Study_or_Research_Findings": 844
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

not set

Original Publish Time

2025-09-21 05:31:07 (8 months ago)

Republished

Word Count (Total)

11,129

Word Count (Content)

8,042

Links

External Links

Internal Links

Technical SEO

Meta Nofollow

Yes

Meta Noarchive

Yes

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

178

TTFB (ms)

160

Download Size (bytes)

58,957

Location

Host ID

129 (laksa129)

Partition ID

Root Hash

7295144728021232729

Unparsed URL

gov,nih!nlm,ncbi,pmc,/articles/PMC3133860/ s443