Search crawler · user agent bingbot

Bingbot IP addresses

Bingbot crawls the web for Microsoft Bing and the Bing index used by other search engines and AI assistants.

Bingbot crawls for Bing, whose index also feeds Microsoft Copilot answers. A data center or bot rule that blocks it by mistake costs you visibility in both. Verify Bingbot by IP against this list before you exempt it from bot protection.

IPv4 prefixes: 28
IPv6 prefixes: 0
IPv4 addresses: 4,736
Updated: Oct 1, 2026

Is this IP Bingbot?

Checks the address against the current list, in your browser.

Download the list

Generated from the current list.

Source: https://www.bing.com/toolbox/bingbot.json · official documentation

All prefixes

The list as of Oct 1, 2026; the page loads the latest copy when it opens.

Prefix
13.66.139.0/24
13.66.144.0/24
13.67.10.16/28
13.69.66.240/28
13.71.172.224/28
20.15.133.160/27
20.36.108.32/28
20.43.120.16/28
20.74.197.0/28
20.79.107.240/28
20.125.163.80/28
40.77.139.0/25
40.77.167.0/24
40.77.177.0/24
40.77.178.0/23
40.77.188.0/22
40.77.202.0/24
40.79.131.208/28
40.79.186.176/28
51.105.67.0/28
52.167.144.0/24
52.231.148.0/28
65.55.210.0/24
139.217.52.0/28
157.55.39.0/24
191.233.204.224/28
199.30.24.0/23
207.46.13.0/24

Verifying Bingbot

The user agent string bingbot can be faked by anyone, and scrapers often pretend to be well-known bots to get past rate limits. Before you treat a request as Bingbot:

Check that the request IP is inside one of the prefixes above (the checker on this page does exactly that).
Load the list from its source on a schedule; do not hard-code it.
Allow the verified bot in your firewall or bot protection, and rate-limit or challenge requests that only claim to be it.

Frequently asked questions

What are the IP ranges of Bingbot?

Bingbot publishes 28 IPv4 and 0 IPv6 prefixes (4,736 IPv4 addresses in total) in its official list at https://www.bing.com/toolbox/bingbot.json. This page shows the list as of Oct 1, 2026 and loads the latest copy when it opens.

How do I verify that a request really comes from Bingbot?

Anyone can send the user agent bingbot. Check that the IP address of the request is in the list (use the checker on this page), or do a reverse DNS lookup followed by a forward lookup, as described in the official documentation.

How often do the Bingbot IP ranges change?

Providers add and remove ranges regularly, sometimes several times a week. Do not hard-code the list: load it from its source (or this page's JSON) on a schedule, for example daily.

How do I allow only Bingbot in nginx?

Download the nginx format on this page and include it in a location block: one 'allow' line per prefix followed by 'deny all;'. Regenerate the file regularly, because the list changes.

IP geolocation API

Know who is behind any IP

Beyond published lists, the ipbase API tells you the owner, ASN and location of every IP address, and on the Medium plan and above its data-center and VPN status, so you can recognise cloud traffic and bots from any provider.

Read the documentation

1,000 free requests every month. No credit card required.

GET https://api.ipbase.com/v2/info?ip=1.1.1.1

{
  "data": {
    "ip": "1.1.1.1",
    "type": "v4",
    "connection": {
      "asn": 13335,
      "organization": "APNIC and Cloudflare DNS Resolver project",
      "isp": "Cloudflare, Inc",
      "range": "1.1.1.0/24"
    },
    "location": {
      "country": { "alpha2": "AU", "name": "Australia" },
      "zip": "4000"
    },
    "security": { "is_vpn": null, "is_tor": null, "threat_score": null }
  }
}