ROIS-DS · Other AI bots

Cotoyogi

Crawler of the Center for Research and Development on Data Lake at ROIS-DS, a Japanese research organisation, which collects Japanese-language data resources.

robots.txt name

Cotoyogi

User agent

Mozilla/5.0 (compatible; Cotoyogi/4.0; +https://ds.rois.ac.jp/center8/crawler/)

Category

Other AI bots: Other automated agents related to AI services.

Follows robots.txt

Yes

Official documentation

https://ds.rois.ac.jp/en_center8/en_crawler/

Published IP ranges

https://ds.rois.ac.jp/en_center8/en_crawler/

Checked against the official documentation on October 17, 2026.

Block or allow it in robots.txt

Add these lines to the robots.txt file at the root of your domain. To block it everywhere:

User-agent: Cotoyogi
Disallow: /

To allow it everywhere except one folder:

User-agent: Cotoyogi
Disallow: /private/

Is it really this bot?

Anyone can copy a user agent. To be sure a request comes from ROIS-DS, compare its IP address with the ranges the company publishes.