Caliperbot
Conductor Caliperbot web crawler for analysis
About this crawler
Caliperbot is a web crawler identified by the regular-expression pattern Caliperbot in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block Caliperbot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.39%
Technical details
- Name
- Caliperbot
- Pattern
Caliperbot- Tags
- seo
- Reference
- https://www.conductor.com/legal/caliperbot/
- Added
- 2019/03/02
- rDNS suffixes
.conductor.com- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely Caliperbot 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.
.conductor.com
Sample User-Agent strings
Caliperbot/1.0 (+http://www.conductor.com/caliperbot)
Block this crawler
robots.txt — disallow Caliperbot:
User-agent: Caliperbot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Caliperbot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Caliperbot") {
return 403;
}
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