Zealbot
Web content indexing and search engine crawler bot
About this crawler
Zealbot is a web crawler identified by the regular-expression pattern Zealbot in the User-Agent request header. It is categorised as search-engine. Use the regex above to detect, log, allow, or block Zealbot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.59%
Technical details
- Name
- Zealbot
- Pattern
Zealbot- Tags
- search-engine
- Reference
- https://knownagents.com/agents/zealbot
- Added
- 2026/04/26
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/4.0 (compatible; Zealbot 1.0)
Block this crawler
robots.txt — disallow Zealbot:
User-agent: Zealbot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Zealbot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Zealbot") {
return 403;
}
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