# Bingbot

Bot · Crawlers · Builds a search index · operated by microsoft

**Identity:** Publishes its IP addresses.

## How to recognise it

- Published IP list: https://www.bing.com/toolbox/bingbot.json
- Reverse DNS ends in `search.msn.com` (then forward-confirm)
- User agent contains `bingbot`, `adidxbot`, `BingPreview`, `MicrosoftPreview`

## Allow or block

To opt out, add to robots.txt:

```robots
User-agent: bingbot
Disallow: /
```

## With Double Agent

Sessions from Bingbot are labelled `bot` with `agent_id: microsoft.bingbot`, and tagged in your analytics. Nothing is blocked unless you choose to. Install: https://doubleagent.so/install.md

Source: https://www.bing.com/webmasters/help/which-crawlers-does-bing-use-8c184ec0