Bingbot

Microsoft · AI search indexer

Microsoft Bing's search crawler. Microsoft publishes its IP list for verification.

User-agent contains

Bingbot

robots.txt token

bingbot

Respects robots.txt

Yes, per operator docs

Official IP ranges

28 prefixes

How to verify Bingbot

Matching the user agent isn't enough, because any client can send it. A real Bingbot request comes from an IP address inside Microsoft's published list:

• https://www.bing.com/toolbox/bingbot.json
  28 prefixes · list dated 2024-01-03 · fetched 2026-10-22

The quickest way to check a whole log is our free log checker. It runs in your browser and splits Bingbot requests into real and fake.

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

Block or allow Bingbot in robots.txt

User-agent: bingbot
Disallow: /

Use Allow: / instead to explicitly permit it, or build a full file with the AI robots.txt generator. robots.txt is a request, not a lock: it only works for bots that honor it, and only real Bingbot traffic would.