facebookexternalhit
Run by Meta
Builds the link preview when someone shares a URL on Facebook, Instagram or Messenger.
How Verisoul identifies facebookexternalhit
facebookexternalhit names itself in its user agent. Anyone can copy that, so we only label a session facebookexternalhit when the other signals check out too.
- Not used
Cryptographic
Not needed to identify it
- Used
Network
Source IP confirmed as the operator's own network
- Not used
Device
Not needed to identify it
- Not used
Behavior
Not needed to identify it
Also names itself in its user agent
How often you'll see it
Very common
About 6% of global crawler traffic in September 2026, per Cloudflare Radar
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