Claude-SearchBot

by Anthropic

About this crawler

Anthropic crawler used to discover and refresh content for Claude search.

Usually means: A search or answer engine is discovering this URL so it can surface your content in results later.

User agent

Claude-SearchBot

Reignat matches these as user-agent tokens, not full browser strings. Providers may add surrounding version or product text.

IP verification

Verified when user agent and IP range both match

Reignat first matches the crawler user-agent token, then compares the request IP with published ranges from Anthropic.

1

User agent

Request user agent contains Claude-SearchBot.

2

Request IP

Server-side tracking forwards the crawler IP seen by your backend.

3

Range check

The IP is compared with published CIDR ranges from the JSON range endpoint.

Sample IP ranges

216.73.216.0/2234.162.230.222/3234.162.244.71/3234.162.191.81/3234.150.241.79/3234.85.172.162/3235.245.175.129/3234.182.222.37/3234.186.108.163/3235.245.89.239/32

Showing up to 10 ranges from the published official source.

Range endpoint

https://claude.com/crawling/bots.json