AI Crawler Index · Anthropic · ClaudeBot
Which .org websites block ClaudeBot?
As of 2026-10-02, 32 of the 514 .org websites whose robots.txt we could read (6.2%) block ClaudeBot, Anthropic's AI training crawler, on the home page, compared with 11% of all sites; 3 more block it on some paths.
6.2%
of 514 .org websites block ClaudeBot
11%
of all sites
32
sites block it
All 32 .org websites that block ClaudeBot
| # | Site | Policy | Crawlers blocked |
|---|---|---|---|
| 275 | unesco.org | Blocks training only | 8 of 29 |
| 604 | themoviedb.org | Blocks some AI search | 20 of 29 |
| 632 | jstor.org | Blocks training only | 4 of 29 |
| 749 | tjk.org | Blocks some AI search | 28 of 29 |
| 1109 | openssl.org | Blocks all AI search | 29 of 29 |
| 1395 | tmdb.org | Blocks some AI search | 20 of 29 |
| 1743 | unep.org | Blocks some AI search | 11 of 29 |
| 1964 | codeberg.org | Blocks some AI search | 12 of 29 |
| 2315 | emojipedia.org | Blocks training only | 7 of 29 |
| 2390 | tvtropes.org | Blocks some AI search | 11 of 29 |
| 2671 | biorxiv.org | Blocks some AI search | 8 of 29 |
| 3080 | wto.org | Blocks some AI search | 28 of 29 |
| 3131 | gentoo.org | Blocks some AI search | 20 of 29 |
| 3141 | bookshop.org | Blocks training only | 9 of 29 |
| 3916 | poetryfoundation.org | Blocks some AI search | 11 of 29 |
| 3920 | britishmuseum.org | Blocks some AI search | 11 of 29 |
| 4260 | albumoftheyear.org | Blocks training only | 7 of 29 |
| 5193 | sciencenews.org | Blocks some AI search | 10 of 29 |
| 5530 | c-span.org | Blocks some AI search | 8 of 29 |
| 5793 | bangumi.org | Blocks some AI search | 6 of 29 |
| 5928 | wikicv.org | Blocks some AI search | 28 of 29 |
| 5937 | wbur.org | Blocks some AI search | 13 of 29 |
| 6516 | healthychildren.org | Blocks training only | 4 of 29 |
| 6690 | pbskids.org | Blocks training only | 8 of 29 |
| 7110 | ebird.org | Blocks all AI search | 29 of 29 |
| 7315 | usgbc.org | Blocks some AI search | 28 of 29 |
| 7347 | gamblingtherapy.org | Blocks all AI search | 29 of 29 |
| 7474 | f-droid.org | Blocks some AI search | 11 of 29 |
| 7569 | freesound.org | Blocks some AI search | 3 of 29 |
| 8723 | sae.org | Blocks training only | 2 of 29 |
| 9189 | project-syndicate.org | Blocks some AI search | 10 of 29 |
| 9835 | dejure.org | Blocks some AI search | 5 of 29 |
Popular .org websites that allow ClaudeBot
Other AI crawlers and .org websites
- GPTBot 11.3%
- PerplexityBot 4.1%
- Google-Extended 7.4%
- CCBot 9.3%
- Bytespider 8%
- Applebot-Extended 5.6%
- OAI-SearchBot 2.1%
ClaudeBot in other segments
- news websites 32%
- .fr (France) websites 30.6%
- .au (Australia) websites 30.6%
- social websites 28.8%
- .it (Italy) websites 25.5%
- .nl (Netherlands) websites 25%
- reference websites 24.4%
- .uk (United Kingdom) websites 21.1%
- .de (Germany) websites 20.2%
- .app websites 16.7%
- .es (Spain) websites 16.7%
- .ch (Switzerland) websites 16.7%
- .net websites 13.4%
- .com websites 12.2%
FAQ
- Which .org websites block ClaudeBot?
- unesco.org, themoviedb.org, jstor.org, tjk.org, openssl.org, tmdb.org, unep.org, codeberg.org, and 24 more (full list on this page).
- How many .org websites block ClaudeBot?
- As of 2026-10-02, 32 of the 514 .org websites whose robots.txt we could read (6.2%) block ClaudeBot, Anthropic's AI training crawler, on the home page, compared with 11% of all sites; 3 more block it on some paths.
- How do I block or allow ClaudeBot on my site?
- Add "User-agent: ClaudeBot" 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.