🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 71 (from laksa117)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa071.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 = 78 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.caltech.edu/about/news/study-at-home-rapid-covid-tests-may-miss-many-infections\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.caltech.edu/about/news/study-at-home-rapid-covid-tests-may-miss-many-infections\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.caltech.edu\/about\/news\/study-at-home-rapid-covid-tests-may-miss-many-infections","crawl_time":1778166216,"first_indexed_time":1686783103,"http_code":200,"src_unparsed":"edu,caltech!www,\/about\/news\/study-at-home-rapid-covid-tests-may-miss-many-infections s443","src_root_hash":"9475656135030775671","history_drop_reason":null,"meta_title":"Study: At-Home Rapid COVID Tests May Miss Many Infections - www.caltech.edu","meta_descriptions":["Researchers in the lab of Rustem Ismagilov have found that COVID tests that rely on rapid nasal swabs can be prone to false negatives during early infection."],"meta_canonical":null,"ml_categories_json":"{\"\/Health\":794,\"\/Science\":784,\"\/Science\/Biological_Sciences\":777,\"\/Health\/Public_Health\":581,\"\/Science\/Biological_Sciences\/Other\":538,\"\/Health\/Public_Health\/Health_Policy\":521}","ml_types_json":"{\"\/Article\":999,\"\/Article\/Study_or_Research_Findings\":950}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1686783103,"attrs_is_republished":0,"attrs_nr_words":"1479","attrs_boilerpipe_nr_words":"855","body_ext_links_number":6,"body_int_links_number":124,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":0,"src_redirect":"","download_time_msec":74,"download_ttfb_msec":74,"download_size":14501}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 71 · Partition 78

laksa071

9475656135030775671

📄

INDEXABLE

✅

CRAWLED

26 days 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`	0.9 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://www.caltech.edu/about/news/study-at-home-rapid-covid-tests-may-miss-many-infections

Last Crawled

2026-05-07 15:03:36 (26 days ago)

First Indexed

2023-06-14 22:51:43 (2 years ago)

HTTP Status Code

200

Content

Meta Title

Study: At-Home Rapid COVID Tests May Miss Many Infections - www.caltech.edu

Meta Description

Researchers in the lab of Rustem Ismagilov have found that COVID tests that rely on rapid nasal swabs can be prone to false negatives during early infection.

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		79.4%
/Science		78.4%
/Science/Biological_Sciences		77.7%
/Health/Public_Health		58.1%
/Science/Biological_Sciences/Other		53.8%
/Health/Public_Health/Health_Policy		52.1%

Raw JSON

{
    "/Health": 794,
    "/Science": 784,
    "/Science/Biological_Sciences": 777,
    "/Health/Public_Health": 581,
    "/Science/Biological_Sciences/Other": 538,
    "/Health/Public_Health/Health_Policy": 521
}

ML Page Types

/Article		99.9%
/Article/Study_or_Research_Findings		95.0%

Raw JSON

{
    "/Article": 999,
    "/Article/Study_or_Research_Findings": 950
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

not set

Original Publish Time

2023-06-14 22:51:43 (2 years ago)

Republished

Word Count (Total)

1,479

Word Count (Content)

855

Links

External Links

Internal Links

124

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Redirect Target

null

Performance

Download Time (ms)

TTFB (ms)

Download Size (bytes)

14,501

Location

Host ID

71 (laksa071)

Partition ID

Root Hash

9475656135030775671

Unparsed URL

edu,caltech!www,/about/news/study-at-home-rapid-covid-tests-may-miss-many-infections s443