- Company
- Microsoft
- Product
- Copilot / Bing
- Why it visits
- Indexing for AI / search answers
- How to verify
- IP list + reverse DNS
- User-agent contains
bingbot
How to tell a real Bingbot from a fake
- The user-agent contains
bingbot. On its own this proves nothing: fakes copy it. - The visit’s IP address is inside Microsoft’s published list (bing, below). If it isn’t, it’s a fake.
- Or: the address’s reverse DNS name ends in .search.msn.com, and that name resolves back to the same address.
IP ranges: bing
28 ranges · updated 12 Oct 2026 · source www.bing.com
Show all 28 ranges
157.55.39.0/24
207.46.13.0/24
40.77.167.0/24
13.66.139.0/24
13.66.144.0/24
52.167.144.0/24
13.67.10.16/28
13.69.66.240/28
13.71.172.224/28
139.217.52.0/28
191.233.204.224/28
20.36.108.32/28
20.43.120.16/28
40.79.131.208/28
40.79.186.176/28
52.231.148.0/28
20.79.107.240/28
51.105.67.0/28
20.125.163.80/28
40.77.188.0/22
65.55.210.0/24
199.30.24.0/23
40.77.202.0/24
40.77.139.0/25
20.74.197.0/28
20.15.133.160/27
40.77.177.0/24
40.77.178.0/23
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 Bingbot in robots.txt
Block it everywhere:
User-agent: bingbot
Disallow: /
Allow it everywhere:
User-agent: bingbot
Allow: /
Fake bots ignore robots.txt: block them by address in your firewall instead.