Castabot
Castabot content aggregation crawler
About this crawler
Castabot is a web crawler identified by the regular-expression pattern Castabot in the User-Agent request header. It is categorised as search-engine. Use the regex above to detect, log, allow, or block Castabot 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
- Castabot
- Pattern
Castabot- Tags
- search-engine
- Reference
- http://topixtream.com/
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Castabot/0.1 (+http://topixtream.com/)
Block this crawler
robots.txt — disallow Castabot:
User-agent: Castabot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Castabot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Castabot") {
return 403;
}
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