meta-externalfetcher
by Meta
About this crawler
Meta fetcher used when a person requests or shares a specific URL.
Usually means: A person asked an AI assistant a question, and the assistant fetched this URL to answer with fresh context or citations.
User agent
meta-externalfetcherReignat matches these as user-agent tokens, not full browser strings. Providers may add surrounding version or product text.
IP verification
i
Identified by user agent only
Meta does not publish IP ranges for this crawler, so the crawl is recorded but marked unverifiable rather than IP-verified.
1
User agent
Request user agent contains meta-externalfetcher.
2
Request IP
Server-side tracking forwards the crawler IP seen by your backend.
3
Range check
No published ranges exist, so the IP can't be confirmed.