50.nu
50.nu web crawler
About this crawler
50.nu is a web crawler identified by the regular-expression pattern 50\.nu in the User-Agent request header. It is categorised as search-engine. Use the regex above to detect, log, allow, or block 50.nu 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
- 50.nu
- Pattern
50\.nu- Tags
- search-engine
- Reference
- http://50.nu/bot.html
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
50.nu/0.01 ( +http://50.nu/bot.html )
Block this crawler
robots.txt — disallow 50.nu:
User-agent: 50.nu
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} 50\.nu [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "50\\.nu") {
return 403;
}
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