Cotoyogi: share of top websites blocking it

On 26 October 2026, 7.3% of the readable top 10k websites fully blocked Cotoyogi in robots.txt (bounds 5.8% to 26.0% over all 8,220 websites, 1,659 of them unreadable); 3.8% blocked it partly and 3.1% named it.

Last verified 2026-10-26 21:13 UTC (daily run of 2026-10-26). Proof for that day.

Operator
ROIS
What it is
AI LLM Scraper.
Description
Scrapes data for AI training in Japanese language.
robots.txt token
User-agent: Cotoyogi
Listed since
2026-10-26 (in this ledger's registry)

Fully blocks

7.3%

480 sites; bounds 5.8% to 26.0%

Partly blocks

3.8%

251 sites

Name it explicitly

3.1%

205 sites; unreadable: 3,439

Over time

Share of panel sites blocking Cotoyogi4 lines, 2016-09-05 to 2026-10-26; values between 2.39 and 7.32 %; latest 7.32 %.2.003.434.866.287.71Sep 2016Mar 2019Sep 2021Apr 2024Oct 2026blocks, reconstructed (Common Crawl): 2016-09-05 UTC: 3.14 %blocks, reconstructed (Common Crawl): 2017-09-25 UTC: 3.51 %blocks, reconstructed (Common Crawl): 2018-09-24 UTC: 3.61 %blocks, reconstructed (Common Crawl): 2019-09-23 UTC: 2.80 %blocks, reconstructed (Common Crawl): 2020-09-28 UTC: 2.52 %blocks, reconstructed (Common Crawl): 2021-09-27 UTC: 2.61 %blocks, reconstructed (Common Crawl): 2022-10-03 UTC: 2.55 %blocks, reconstructed (Common Crawl): 2024-09-16 UTC: 2.39 %blocks, reconstructed (Common Crawl): 2026-09-21 UTC: 4.35 %partly blocks, reconstructed (Common Crawl): 2016-09-05 UTC: 5.04 %partly blocks, reconstructed (Common Crawl): 2017-09-25 UTC: 4.91 %partly blocks, reconstructed (Common Crawl): 2018-09-24 UTC: 4.82 %partly blocks, reconstructed (Common Crawl): 2019-09-23 UTC: 4.76 %partly blocks, reconstructed (Common Crawl): 2020-09-28 UTC: 4.82 %partly blocks, reconstructed (Common Crawl): 2021-09-27 UTC: 4.98 %partly blocks, reconstructed (Common Crawl): 2022-10-03 UTC: 4.91 %partly blocks, reconstructed (Common Crawl): 2024-09-16 UTC: 5.10 %partly blocks, reconstructed (Common Crawl): 2026-09-21 UTC: 5.47 %blocks, daily observation: 2026-10-26 UTC: 7.32 %partly blocks, daily observation: 2026-10-26 UTC: 3.83 %

"Partly blocks" counts every robots.txt whose rules for Cotoyogi disallow some paths, including generic rules for all crawlers (for example /search); it is not a measure of targeted AI policy. Shares are of the readable websites (W − U: 8,220 websites, 1,659 unreadable); the bounds assume none / all of the unreadable sites block. Solid: daily first-party observations (top 10k of the Tranco list W3ZV9, one fixed cohort). Dashed: reconstructed from Common Crawl (top 10k, sites readable in every crawl), a separate series.

Reconstructed values per crawl
CrawlDateBlocksSites read
CC-MAIN-2016-362016-09-053.1%3,216
CC-MAIN-2017-392017-09-253.5%3,216
CC-MAIN-2018-392018-09-243.6%3,216
CC-MAIN-2019-392019-09-232.8%3,216
CC-MAIN-2020-402020-09-282.5%3,216
CC-MAIN-2021-392021-09-272.6%3,216
CC-MAIN-2022-402022-10-032.5%3,216
CC-MAIN-2024-382024-09-162.4%3,216
CC-MAIN-2026-392026-09-214.4%3,216

Recent blockers

Sites that started fully blocking Cotoyogi since 2026-07-28, highest-ranked first.

DateSiteWhat changed
No changes recorded yet. The first daily run is the baseline; changes appear from the second day on.

Recent unblockers

DateSiteWhat changed
No changes recorded yet. The first daily run is the baseline; changes appear from the second day on.

Sites blocking Cotoyogi now

facebook.com (*) · fbcdn.net (*) · instagram.com (*) · twitter.com (*) · googlevideo.com (*) · amazon.com · netflix.com (*) · x.com (*) · pinterest.com (*) · baidu.com (*) · amazonvideo.com · msn.com · reddit.com (*) · skybridge.click (*) · registrar-servers.com (*) · flickr.com (*) · meraki.com (*) · t.co (*) · linktr.ee (*) · imdb.com (*) · launchpad.net · reuters.com (*) · demdex.net (*) · weibo.com (*) · amazon.co.uk · naver.com (*) · trustpilot.com (*) · netflix.net (*) · nflxvideo.net (*) · wsj.com (*) · amazon.de · cookiedatabase.org (*) · gcdn.co (*) · kwai.net (*) · amazon.co.jp · edgecdn.ru (*) · uol.com.br · sohu.com (*) · threads.com (*) · netcraze.io (*) · usatoday.com · dailymail.com · telegraph.co.uk · amazon.fr · amazon.ca · sharethrough.com (*) · primevideo.com · amazon.in · hstgr.net (*) · lemonde.fr · imgsmail.ru (*) · fb.com (*) · hihonorcloud.com (*) · dailymail.co.uk · amazon.es · pinimg.com (*) · amazon.it · cnet.com · quantserve.com (*) · creativecdn.com (*)

(*) blocked through the * group, not by name. Full list in current.csv.

Cite this

InfraRabbit AI Crawl Ledger, "Share of top websites blocking Cotoyogi", https://infrarabbit.com/crawlers/bot/Cotoyogi, retrieved 2026-10-26. CC BY 4.0.