AI Crawler Index · Common Crawl · CCBot
Which .edu websites block CCBot?
As of 2026-10-03, 5 of the 161 .edu websites whose robots.txt we could read (3.1%) block CCBot, Common Crawl's AI training crawler, on the home page, compared with 12.8% of all sites; 1 more block it on some paths.
3.1%
of 161 .edu websites block CCBot
12.8%
of all sites
5
sites block it
All 5 .edu websites that block CCBot
| # | Site | Policy | Crawlers blocked |
|---|---|---|---|
| 378 | academia.edu | Blocks some AI search | 21 of 29 |
| 1530 | osu.edu | Blocks all AI search | 29 of 29 |
| 1841 | cuny.edu | Blocks some AI search | 28 of 29 |
| 2711 | ucsc.edu | Blocks training only | 8 of 29 |
| 5303 | nap.edu | Blocks some AI search | 7 of 29 |
Popular .edu websites that allow CCBot
Other AI crawlers and .edu websites
- GPTBot 3.7%
- ClaudeBot 3.1%
- PerplexityBot 2.5%
- Google-Extended 3.7%
- Bytespider 5.6%
- Applebot-Extended 2.5%
CCBot in other segments
- news websites 35.8%
- .fr (France) websites 35.3%
- .it (Italy) websites 32.7%
- social websites 30.8%
- .au (Australia) websites 29.7%
- reference websites 28.9%
- .nl (Netherlands) websites 27.1%
- .uk (United Kingdom) websites 24.4%
- .de (Germany) websites 23.6%
- .es (Spain) websites 22.2%
- .pl (Poland) websites 20.8%
- .app websites 16.7%
- .ch (Switzerland) websites 16.7%
- .com websites 14%
FAQ
- Which .edu websites block CCBot?
- academia.edu, osu.edu, cuny.edu, ucsc.edu, nap.edu.
- How many .edu websites block CCBot?
- As of 2026-10-03, 5 of the 161 .edu websites whose robots.txt we could read (3.1%) block CCBot, Common Crawl's AI training crawler, on the home page, compared with 12.8% of all sites; 1 more block it on some paths.
- How do I block or allow CCBot on my site?
- Add "User-agent: CCBot" followed by "Disallow: /" to https://<your-site>/robots.txt to block it, or "Allow: /" to allow it. Check the result with the free AI crawler checker at tools.yukai.uk/free/ai-crawler-checker.