sitebulb
Sitebulb SEO web crawler for analysis
About this crawler
sitebulb is a web crawler identified by the regular-expression pattern sitebulb in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block sitebulb traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.39%
Technical details
- Name
- sitebulb
- Pattern
sitebulb- Tags
- seo
- Reference
- https://sitebulb.com/
- Added
- 2025/04/30
- rDNS suffixes
.sitebulb.com- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely sitebulb with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.sitebulb.com
Sample User-Agent strings
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.6439.0 Mobile Safari/537.36 +https://sitebulb.com
Block this crawler
robots.txt — disallow sitebulb:
User-agent: sitebulb
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} sitebulb [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "sitebulb") {
return 403;
}
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