CheckHost
Website uptime and performance monitoring bot
About this crawler
CheckHost is a web crawler identified by the regular-expression pattern CheckHost in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block CheckHost 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
- CheckHost
- Pattern
CheckHost- Tags
- monitoring
- Reference
- https://datadome.co/bots/check-host/
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
CheckHost (https://check-host.net/)
Block this crawler
robots.txt — disallow CheckHost:
User-agent: CheckHost
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} CheckHost [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "CheckHost") {
return 403;
}
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