🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 53 (from laksa050)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa053.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 = 35 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://matrix.reshish.com/matrix-multiplication/\')), getAhrefsUnparsedNoserviceFromURL(\'https://matrix.reshish.com/matrix-multiplication/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/matrix.reshish.com\/matrix-multiplication\/","crawl_time":1776276336,"first_indexed_time":1752090457,"http_code":200,"src_unparsed":"com,reshish!matrix,\/matrix-multiplication\/ s443","src_root_hash":"7745344111639527053","history_drop_reason":null,"meta_title":"Matrix Multiplication Calculator","meta_descriptions":["Here you can perform matrix multiplication with complex numbers online for free. After calculation you can multiply the result by another matrix right there!"],"meta_canonical":null,"ml_categories_json":"{\"\/Science\":791,\"\/Science\/Mathematics\":790,\"\/Science\/Mathematics\/Other\":755,\"\/Computers_and_Electronics\":107}","ml_types_json":"{\"\/Interactive_Tools\":992,\"\/Interactive_Tools\/Calculator\":984}","ml_intent_types_json":"{\"Transactional\":679,\"Informational\":451}","meta_language":"en","attrs_author":null,"attrs_publish_time":0,"attrs_original_publish_time":1752090457,"attrs_is_republished":0,"attrs_nr_words":"223","attrs_boilerpipe_nr_words":"154","body_ext_links_number":1,"body_int_links_number":17,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":55,"download_ttfb_msec":54,"download_size":4518}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 53 · Partition 35

laksa053

7745344111639527053

📄

INDEXABLE

✅

CRAWLED

1 month 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`	1.6 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://matrix.reshish.com/matrix-multiplication/

Last Crawled

2026-04-15 18:05:36 (1 month ago)

First Indexed

2025-07-09 19:47:37 (10 months ago)

HTTP Status Code

200

Content

Meta Title

Matrix Multiplication Calculator

Meta Description

Here you can perform matrix multiplication with complex numbers online for free. After calculation you can multiply the result by another matrix right there!

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

/Science		79.1%
/Science/Mathematics		79.0%
/Science/Mathematics/Other		75.5%
/Computers_and_Electronics		10.7%

Raw JSON

{
    "/Science": 791,
    "/Science/Mathematics": 790,
    "/Science/Mathematics/Other": 755,
    "/Computers_and_Electronics": 107
}

ML Page Types

/Interactive_Tools		99.2%
/Interactive_Tools/Calculator		98.4%

Raw JSON

{
    "/Interactive_Tools": 992,
    "/Interactive_Tools/Calculator": 984
}

ML Intent Types

Transactional		67.9%
Informational		45.1%

Raw JSON

{
    "Transactional": 679,
    "Informational": 451
}

Content Metadata

Language

Author

null

Publish Time

not set

Original Publish Time

2025-07-09 19:47:37 (10 months ago)

Republished

Word Count (Total)

223

Word Count (Content)

154

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)

4,518

Location

Host ID

53 (laksa053)

Partition ID

Root Hash

7745344111639527053

Unparsed URL

com,reshish!matrix,/matrix-multiplication/ s443