GigaBot
Gigablast search engine bot (variant spelling)
About this crawler
GigaBot is a web crawler identified by the regular-expression pattern GigaBot in the User-Agent request header. It is categorised as search-engine. Use the regex above to detect, log, allow, or block GigaBot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
1.2%
Technical details
- Name
- GigaBot
- Pattern
GigaBot- Tags
- search-engine
- Reference
- http://www.gigablast.com/
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (compatible; GigaBot/1.0; +http://www.gigablast.com/ )
Block this crawler
robots.txt — disallow GigaBot:
User-agent: GigaBot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} GigaBot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "GigaBot") {
return 403;
}
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