facebookcatalog

advertising 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.

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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