facebookcatalog
Facebook catalog web crawler bot
About this crawler
facebookcatalog is a web crawler identified by the regular-expression pattern facebookcatalog\/ in the User-Agent request header. It is categorised as advertising. Use the regex above to detect, log, allow, or block facebookcatalog 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
- facebookcatalog
- Pattern
facebookcatalog\/- Tags
- advertising
- Reference
- https://developers.facebook.com/docs/sharing/webmasters/web-crawlers
- Added
- 2024/10/03
- rDNS suffixes
.facebook.com,.fbcdn.net,.fbsv.net,.tfbnw.net- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely facebookcatalog with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.facebook.com.fbcdn.net.fbsv.net.tfbnw.net
Sample User-Agent strings
facebookcatalog/1.0
Block this crawler
robots.txt — disallow facebookcatalog:
User-agent: facebookcatalog
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} facebookcatalog\/ [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "facebookcatalog\\/") {
return 403;
}
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