bingbot

Microsoft · Search engines · json

User-agent: bingbot
Disallow: /
robots.txt tokenbingbot
User-agent containsbingbot
OperatorMicrosoft
CategorySearch engines
robots.txtobeys robots.txt (documented)
Verify bypublished IP ranges
Published ranges28 IPv4 + 0 IPv6 · json · source

What it is

Bing's only crawler, and therefore also the crawler behind Microsoft Copilot's grounding. Microsoft's documented way to keep search indexing while refusing generative reuse is the nocache / noarchive robots meta directive, not a separate user-agent.

What blocking it costs you

Very high and very wide: Bing, Copilot, DuckDuckGo and several assistants that resell Bing's index all lose you at once. Use nocache/noarchive rather than blocking.

Full user-agent string

Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)

Allow it instead

User-agent: bingbot
Allow: /

Operator documentation: https://www.bing.com/webmasters/help/which-crawlers-does-bing-use-8c184ec0
Machine copies: json · markdown
Policies that name this crawler: allow-all · allow-ai-search-only · maximum-ai-visibility