🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 70 (from laksa007)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa070.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 = 37 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://apstudents.collegeboard.org/courses/ap-computer-science-a\')), getAhrefsUnparsedNoserviceFromURL(\'https://apstudents.collegeboard.org/courses/ap-computer-science-a\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/apstudents.collegeboard.org\/courses\/ap-computer-science-a","crawl_time":1778924407,"first_indexed_time":1558605566,"http_code":200,"src_unparsed":"org,collegeboard!apstudents,\/courses\/ap-computer-science-a s443","src_root_hash":"9677673930691487470","history_drop_reason":null,"meta_title":"AP Computer Science A – AP Students | College Board","meta_descriptions":["Study the concepts and tools of computer science as you learn a subset of the Java programming language. You will design, write, and test computer programs."],"meta_canonical":null,"ml_categories_json":"{\"\/Computers_and_Electronics\":906,\"\/Computers_and_Electronics\/Programming\":883,\"\/Jobs_and_Education\":846,\"\/Jobs_and_Education\/Education\":846,\"\/Jobs_and_Education\/Education\/Computer_Education\":771,\"\/Computers_and_Electronics\/Programming\/Java_(Programming_Language)\":652}","ml_types_json":"{\"\/Core_Page\":909,\"\/Core_Page\/Services_Page\":862}","ml_intent_types_json":"{\"Informational\":981,\"Navigational\":161}","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1558605566,"attrs_is_republished":0,"attrs_nr_words":"1560","attrs_boilerpipe_nr_words":"414","body_ext_links_number":5,"body_int_links_number":42,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":90,"download_ttfb_msec":89,"download_size":12654}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 70 · Partition 37

laksa070

9677673930691487470

📄

INDEXABLE

✅

CRAWLED

18 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`	0.6 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://apstudents.collegeboard.org/courses/ap-computer-science-a

Last Crawled

2026-05-16 09:40:07 (18 days ago)

First Indexed

2019-05-23 09:59:26 (7 years ago)

HTTP Status Code

200

Content

Meta Title

AP Computer Science A – AP Students | College Board

Meta Description

Study the concepts and tools of computer science as you learn a subset of the Java programming language. You will design, write, and test computer programs.

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

/Computers_and_Electronics		90.6%
/Computers_and_Electronics/Programming		88.3%
/Jobs_and_Education		84.6%
/Jobs_and_Education/Education		84.6%
/Jobs_and_Education/Education/Computer_Education		77.1%
/Computers_and_Electronics/Programming/Java_(Programming_Language)		65.2%

Raw JSON

{
    "/Computers_and_Electronics": 906,
    "/Computers_and_Electronics/Programming": 883,
    "/Jobs_and_Education": 846,
    "/Jobs_and_Education/Education": 846,
    "/Jobs_and_Education/Education/Computer_Education": 771,
    "/Computers_and_Electronics/Programming/Java_(Programming_Language)": 652
}

ML Page Types

/Core_Page		90.9%
/Core_Page/Services_Page		86.2%

Raw JSON

{
    "/Core_Page": 909,
    "/Core_Page/Services_Page": 862
}

ML Intent Types

Informational		98.1%
Navigational		16.1%

Raw JSON

{
    "Informational": 981,
    "Navigational": 161
}

Content Metadata

Language

Author

null

Publish Time

not set

Original Publish Time

2019-05-23 09:59:26 (7 years ago)

Republished

Word Count (Total)

1,560

Word Count (Content)

414

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)

12,654

Location

Host ID

70 (laksa070)

Partition ID

Root Hash

9677673930691487470

Unparsed URL

org,collegeboard!apstudents,/courses/ap-computer-science-a s443