MetaIAB Facebook
Facebook link preview fetcher
About this crawler
MetaIAB Facebook is a web crawler identified by the regular-expression pattern MetaIAB Facebook in the User-Agent request header. It is categorised as social-preview. Use the regex above to detect, log, allow, or block MetaIAB Facebook traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
No block-rate data for this crawler.
Technical details
- Name
- MetaIAB Facebook
- Pattern
MetaIAB Facebook- Tags
- social-preview
- Reference
- https://knownagents.com/agents/facebook
- Added
- 2026/04/26
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Linux; Android 16; Pixel 10 Pro XL Build/CP1A.260305.018; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.174 Mobile Safari/537.36 MetaIAB Facebook
Block this crawler
robots.txt — disallow MetaIAB Facebook:
User-agent: MetaIAB Facebook
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} MetaIAB Facebook [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "MetaIAB Facebook") {
return 403;
}
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