Anthropic . tier 1
Claude-User
Fetches a page live on behalf of a Claude user.
272 of the 3,642 sites we measured deny Claude-User access to their root, which is 7.5% of the index.
How to allow or block it
A group naming the token wins outright over the wildcard group. It does not inherit from it, so rules set under User-agent: * do not carry over.
# Allow Claude-User everywhere
User-agent: Claude-User
Disallow:
# Block Claude-User entirely
User-agent: Claude-User
Disallow: /Sites blocking Claude-User
Most-visited first. Showing up to 100 of 272.
| Rank | Domain | Score | Answer-surface crawlers | Stack |
|---|---|---|---|---|
| 5 | facebook.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 14 | instagram.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 16 | twitter.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 17 | linkedin.com | Score 17 out of 100, grade F, partial assessment | 9 blocked | unidentified |
| 18 | mail.ru | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 31 | amazon.comrefused GPTBot | Score 15 out of 100, grade F | 10 blocked | Amazon CloudFront |
| 47 | x.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 52 | pinterest.com | Score 17 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 61 | myfritz.net | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 63 | tiktok.com | Score 15 out of 100, grade F | 11 blocked | unidentified |
| 83 | amazonvideo.com | Score 40 out of 100, grade D | 5 blocked | Amazon CloudFront |
| 85 | baidu.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 103 | reddit.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 112 | chatgpt.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 126 | skybridge.click | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 163 | nytimes.comrefused GPTBot | Score 21 out of 100, grade F, partial assessment | 11 blocked | Fastly |
| 191 | soundcloud.com | Score 31 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 193 | cnn.com | Score 31 out of 100, grade F | 9 blocked | Fastly |
| 196 | theguardian.com | Score 46 out of 100, grade D | 6 blocked | unidentified |
| 263 | imdb.com | Score 9 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 283 | reuters.com | Score 26 out of 100, grade F, partial assessment | 9 blocked | unidentified |
| 284 | launchpad.netrefused GPTBot | Score 20 out of 100, grade F | 9 blocked | unidentified |
| 325 | weibo.com | Score 18 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 330 | amazon.co.ukrefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 344 | naver.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 372 | wsj.com | Score 31 out of 100, grade F, partial assessment | 8 blocked | unidentified |
| 385 | amazon.derefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 388 | bloomberg.comrefused GPTBot | Score 41 out of 100, grade D | 10 blocked | Next.js . Fastly |
| 439 | gcdn.co | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 476 | netcraze.io | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 481 | cnbc.comrefused GPTBot | Score 24 out of 100, grade F | 11 blocked | Akamai |
| 494 | amazon.co.jprefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 497 | quora.com | Score 13 out of 100, grade F, partial assessment | 10 blocked | unidentified |
| 552 | uol.com.br | Score 47 out of 100, grade D | 8 blocked | Amazon CloudFront |
| 566 | sohu.com | Score 8 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 574 | wired.com | Score 51 out of 100, grade D | 8 blocked | Cloudflare |
| 580 | edgecdn.ru | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 589 | threads.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 609 | dailymail.comrefused GPTBot | Score 35 out of 100, grade F | 11 blocked | Akamai |
| 622 | usatoday.com | Score 24 out of 100, grade F | 11 blocked | Sitecore |
| 630 | telegraph.co.uk | Score 37 out of 100, grade F | 10 blocked | Adobe Experience Manager . Fastly |
| 642 | amazon.frrefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Akamai |
| 645 | amazon.carefused GPTBot | Score 15 out of 100, grade F | 10 blocked | Amazon CloudFront |
| 655 | hstgr.net | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 676 | amazon.inrefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 677 | elpais.com | Score 51 out of 100, grade D, partial assessment | 5 blocked | unidentified |
| 681 | primevideo.com | Score 40 out of 100, grade D | 5 blocked | Amazon CloudFront |
| 692 | sharethrough.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 699 | lemonde.fr | Score 48 out of 100, grade D, partial assessment | 5 blocked | Fastly |
| 703 | yelp.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 708 | fb.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 713 | amazon.esrefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 723 | dailymail.co.ukrefused GPTBot | Score 35 out of 100, grade F | 11 blocked | Akamai |
| 730 | pinimg.com | Score 17 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 733 | hihonorcloud.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 736 | amazon.itrefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 737 | quantserve.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 749 | cnet.com | Score 44 out of 100, grade D | 10 blocked | WordPress |
| 757 | creativecdn.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 765 | imgsmail.ru | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 799 | apnews.comrefused GPTBot | Score 49 out of 100, grade D, partial assessment | 7 blocked | Cloudflare |
| 825 | people.com | Score 35 out of 100, grade F, partial assessment | 8 blocked | Cloudflare |
| 850 | adform.net | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 857 | spiegel.de | Score 40 out of 100, grade D | 8 blocked | Google Cloud / GFE |
| 866 | theverge.com | Score 44 out of 100, grade D | 9 blocked | WordPress . Fastly |
| 871 | amazon.com.brrefused GPTBot | Score 15 out of 100, grade F | 10 blocked | Amazon CloudFront |
| 875 | amazon.co.zarefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Akamai |
| 885 | daum.net | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 899 | mercadolivre.com.brrefused GPTBot | Score 42 out of 100, grade D | 6 blocked | unidentified |
| 900 | nbcnews.com | Score 30 out of 100, grade F | 11 blocked | Next.js . Akamai |
| 910 | figma.com | Score 47 out of 100, grade D | 8 blocked | Sanity . Amazon CloudFront |
| 934 | xiaohongshu.com | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 958 | amazon.com.aurefused GPTBot | Score 16 out of 100, grade F, partial assessment | 10 blocked | Amazon CloudFront |
| 959 | mercadolibre.com.arrefused GPTBot | Score 42 out of 100, grade D | 6 blocked | unidentified |
| 964 | corriere.itrefused GPTBot | Score 34 out of 100, grade F | 11 blocked | Fastly |
| 978 | huffpost.com | Score 46 out of 100, grade D | 11 blocked | Fastly |
| 980 | vkontakte.ru | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 986 | mailchi.mp | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 997 | btloader.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 1016 | namecheaphosting.com | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 1033 | amazon.com.mxrefused GPTBot | Score 15 out of 100, grade F | 10 blocked | Amazon CloudFront |
| 1037 | attn.tv | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 1048 | theatlantic.comrefused GPTBot | Score 43 out of 100, grade D, partial assessment | 8 blocked | Cloudflare |
| 1055 | ouest-france.fr | Score 14 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 1059 | investopedia.com | Score 35 out of 100, grade F, partial assessment | 8 blocked | Cloudflare |
| 1068 | themoviedb.orgrefused GPTBot | Score 18 out of 100, grade F, partial assessment | 11 blocked | Amazon CloudFront |
| 1070 | bfmtv.com | Score 35 out of 100, grade F | 11 blocked | Amazon CloudFront |
| 1093 | as.comrefused GPTBot | Score 49 out of 100, grade D, partial assessment | 5 blocked | unidentified |
| 1098 | marca.com | Score 42 out of 100, grade D | 11 blocked | Fastly |
| 1109 | nypost.com | Score 45 out of 100, grade D | 7 blocked | WordPress |
| 1120 | rocketmoney.dev | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 1147 | mercadolibre.com.mxrefused GPTBot | Score 42 out of 100, grade D | 6 blocked | unidentified |
| 1186 | theconversation.com | Score 26 out of 100, grade F | 11 blocked | Next.js . Fastly |
| 1190 | namu.wiki | Score 6 out of 100, grade F, partial assessment | 11 blocked | unidentified |
| 1191 | nu.nlrefused GPTBot | Score 18 out of 100, grade F, partial assessment | 11 blocked | Akamai |
| 1203 | ad.nlrefused GPTBot | Score 27 out of 100, grade F, partial assessment | 10 blocked | Akamai |
| 1242 | amap.com | Score 54 out of 100, grade D, partial assessment | 5 blocked | unidentified |
| 1245 | furaffinity.netrefused GPTBot | Score 6 out of 100, grade F, partial assessment | 11 blocked | Cloudflare |
| 1274 | economist.comrefused GPTBot | Score 33 out of 100, grade F, partial assessment | 10 blocked | Cloudflare |
| 1294 | actu.fr | Score 36 out of 100, grade F | 10 blocked | Cloudflare |
Using these figures
Free to reuse in research, journalism or a product under CC BY 4.0, with credit to Fidget Labs BV. Quote the measurement date so the claim stays checkable as the index moves.
CrawlIndex by Fidget Labs BV. "Sites blocking Claude-User." https://crawlindex.org (measured 2026-11-07). Licensed CC BY 4.0.