🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 185 (from laksa198)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa185.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 = 82 AND (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.nber.org/papers/w31710\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.nber.org/papers/w31710\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.nber.org\/papers\/w31710","crawl_time":1779681578,"first_indexed_time":1695631301,"http_code":200,"src_unparsed":"org,nber!www,\/papers\/w31710 s443","src_root_hash":"16229434317321816585","history_drop_reason":null,"meta_title":"Minimum Lot Size Restrictions: Impacts on Urban Form and House Price at the Border | NBER","meta_descriptions":["Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals."],"meta_canonical":null,"ml_categories_json":"{\"\/Real_Estate\":668,\"\/Finance\":325,\"\/Law_and_Government\":281,\"\/Finance\/Financial_Planning_and_Management\":141,\"\/Law_and_Government\/Government\":123,\"\/Law_and_Government\/Government\/Public_Policy\":117}","ml_types_json":"{\"\/Article\":938,\"\/Article\/Study_or_Research_Findings\":907}","ml_intent_types_json":"{\"Informational\":999}","meta_language":"en","attrs_author":null,"attrs_publish_time":1695297600,"attrs_original_publish_time":1695297600,"attrs_is_republished":0,"attrs_nr_words":"987","attrs_boilerpipe_nr_words":"215","body_ext_links_number":11,"body_int_links_number":130,"meta_nofollow":0,"meta_noarchive":0,"props_was_rendered":1,"src_redirect":"","download_time_msec":343,"download_ttfb_msec":334,"download_size":22332}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📍

LOCATION

Host 185 · Partition 82

laksa185

16229434317321816585

📄

INDEXABLE

✅

CRAWLED

9 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`	0.3 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.nber.org/papers/w31710

Last Crawled

2026-05-25 03:59:38 (9 days ago)

First Indexed

2023-09-25 08:41:41 (2 years ago)

HTTP Status Code

200

Content

Meta Title

Minimum Lot Size Restrictions: Impacts on Urban Form and House Price at the Border | NBER

Meta Description

Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals.

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

/Real_Estate		66.8%
/Finance		32.5%
/Law_and_Government		28.1%
/Finance/Financial_Planning_and_Management		14.1%
/Law_and_Government/Government		12.3%
/Law_and_Government/Government/Public_Policy		11.7%

Raw JSON

{
    "/Real_Estate": 668,
    "/Finance": 325,
    "/Law_and_Government": 281,
    "/Finance/Financial_Planning_and_Management": 141,
    "/Law_and_Government/Government": 123,
    "/Law_and_Government/Government/Public_Policy": 117
}

ML Page Types

/Article		93.8%
/Article/Study_or_Research_Findings		90.7%

Raw JSON

{
    "/Article": 938,
    "/Article/Study_or_Research_Findings": 907
}

ML Intent Types

Informational

99.9%

Raw JSON

{
    "Informational": 999
}

Content Metadata

Language

Author

null

Publish Time

2023-09-21 12:00:00 (2 years ago)

Original Publish Time

2023-09-21 12:00:00 (2 years ago)

Republished

Word Count (Total)

987

Word Count (Content)

215

Links

External Links

Internal Links

130

Technical SEO

Meta Nofollow

Meta Noarchive

JS Rendered

Yes

Redirect Target

null

Performance

Download Time (ms)

343

TTFB (ms)

334

Download Size (bytes)

22,332

Location

Host ID

185 (laksa185)

Partition ID

Root Hash

16229434317321816585

Unparsed URL

org,nber!www,/papers/w31710 s443