XaxisSemanticsClassifier
Crystal Semantics classifier
About this crawler
XaxisSemanticsClassifier is a web crawler identified by the regular-expression pattern XaxisSemanticsClassifier in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block XaxisSemanticsClassifier 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
- XaxisSemanticsClassifier
- Pattern
XaxisSemanticsClassifier- Tags
- seo
- Reference
- http://crystalsemantics.com
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.93 Safari/537.36 XaxisSemanticsClassifier/1.0 http://crystalsemantics.com
Block this crawler
robots.txt — disallow XaxisSemanticsClassifier:
User-agent: XaxisSemanticsClassifier
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} XaxisSemanticsClassifier [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "XaxisSemanticsClassifier") {
return 403;
}
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