O
OMSC
OMSC crawler
About this crawler
OMSC is a web crawler identified by the regular-expression pattern OMSC in the User-Agent request header. It is categorised as http-library. Use the regex above to detect, log, allow, or block OMSC traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- OMSC
- Pattern
OMSC- Tags
- http-library
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
OMSC
Block this crawler
robots.txt — disallow OMSC:
User-agent: OMSC
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} OMSC [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "OMSC") {
return 403;
}
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