- Company
- Anthropic
- Product
- Claude
- Why it visits
- Answering someone right now
- How to verify
- Published IP list
- User-agent contains
Claude-Web
How to tell a real Claude-Web from a fake
- The user-agent contains
Claude-Web. On its own this proves nothing: fakes copy it. - The visit’s IP address is inside Anthropic’s published list (anthropic, below). If it isn’t, it’s a fake.
IP ranges: anthropic
38 ranges · updated 12 Oct 2026 · source claude.com
Show all 38 ranges
216.73.216.0/22
34.162.230.222/32
34.162.244.71/32
34.162.191.81/32
34.150.241.79/32
34.85.172.162/32
35.245.175.129/32
34.182.222.37/32
34.186.108.163/32
35.245.89.239/32
34.182.161.143/32
34.182.218.27/32
34.182.220.85/32
34.11.34.31/32
34.182.140.95/32
136.107.176.208/32
34.182.226.151/32
34.182.226.221/32
35.221.29.174/32
34.182.225.167/32
40.124.101.48/28
20.102.46.224/28
20.64.57.208/28
16.58.26.69/32
18.225.238.228/32
18.227.226.255/32
160.79.106.128/28
160.79.106.16/28
34.162.86.102/32
136.79.143.251/32
136.83.20.215/32
34.162.111.78/32
34.162.90.102/32
34.162.27.34/32
34.152.124.140/32
34.153.21.190/32
34.186.252.4/32
34.162.153.71/32
Recent changes to these ranges
No changes recorded yet. When a company adds or removes ranges, it shows up here (lists are checked every day).
Allow or block Claude-Web in robots.txt
Block it everywhere:
User-agent: Claude-Web
Disallow: /
Allow it everywhere:
User-agent: Claude-Web
Allow: /
This bot fetches pages for people asking Claude right now. Blocking it can stop your pages being opened or cited in its answers. Fake bots ignore robots.txt: block them by address in your firewall instead.