🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 62 (from laksa082)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa062.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 = 88 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.britannica.com/technology/nuclear-reactor/Fukushima\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.britannica.com/technology/nuclear-reactor/Fukushima\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.britannica.com\/technology\/nuclear-reactor\/Fukushima","crawl_time":1775230889,"first_indexed_time":1561817850,"http_code":200,"src_unparsed":"com,britannica!www,\/technology\/nuclear-reactor\/Fukushima s443","src_root_hash":"5455945239613777662","history_drop_reason":null,"meta_title":"Nuclear reactor - Fukushima, Meltdown, Radiation | Britannica","meta_descriptions":["Nuclear reactor - Fukushima, Meltdown, Radiation: A failure of the main power line and a loss of backup power were at the heart of the second worst nuclear accident in the history of nuclear power generation (after Chernobyl)—a partial meltdown in 2011 at the Fukushima Daiichi (“Number One”) plant in Japan. That facility, located on Japan’s Pacific coast in northeastern Fukushima prefecture, was made up of six boiling-water reactors (BWRs) constructed between 1971 and 1979, three of which were operational and one of which was under maintenance, its fuel having been stored out of the core in the reactor’s spent fuel storage pool. A powerful earthquake"],"meta_canonical":null,"ml_categories_json":"{\"\/Science\":966,\"\/Science\/Physics\":900}","ml_types_json":"{\"\/Article\":996,\"\/Article\/Wiki\":382}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":"Wade Marcum","attrs_publish_time":1773878400,"attrs_original_publish_time":1561817850,"attrs_is_republished":1,"attrs_nr_words":"3878","attrs_boilerpipe_nr_words":"1358","body_ext_links_number":38,"body_int_links_number":151,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":196,"download_ttfb_msec":195,"download_size":26470}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 62 · Partition 88

laksa062

5455945239613777662

📄

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 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.britannica.com/technology/nuclear-reactor/Fukushima

Last Crawled

2026-04-03 15:41:29 (2 months ago)

First Indexed

2019-06-29 14:17:30 (6 years ago)

HTTP Status Code

200

Content

Meta Title

Nuclear reactor - Fukushima, Meltdown, Radiation | Britannica

Meta Description

Nuclear reactor - Fukushima, Meltdown, Radiation: A failure of the main power line and a loss of backup power were at the heart of the second worst nuclear accident in the history of nuclear power generation (after Chernobyl)—a partial meltdown in 2011 at the Fukushima Daiichi (“Number One”) plant in Japan. That facility, located on Japan’s Pacific coast in northeastern Fukushima prefecture, was made up of six boiling-water reactors (BWRs) constructed between 1971 and 1979, three of which were operational and one of which was under maintenance, its fuel having been stored out of the core in the reactor’s spent fuel storage pool. A powerful earthquake

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		96.6%
/Science/Physics		90.0%

Raw JSON

{
    "/Science": 966,
    "/Science/Physics": 900
}

ML Page Types

/Article		99.6%
/Article/Wiki		38.2%

Raw JSON

{
    "/Article": 996,
    "/Article/Wiki": 382
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

Wade Marcum

Publish Time

2026-03-19 00:00:00 (2 months ago)

Original Publish Time

2019-06-29 14:17:30 (6 years ago)

Republished

Yes

Word Count (Total)

3,878

Word Count (Content)

1,358

Links

External Links

Internal Links

151

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

196

TTFB (ms)

195

Download Size (bytes)

26,470

Location

Host ID

62 (laksa062)

Partition ID

Root Hash

5455945239613777662

Unparsed URL

com,britannica!www,/technology/nuclear-reactor/Fukushima s443