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