CB
ContextAd Bot
ContextAd web crawler for advertising
About this crawler
ContextAd Bot is a web crawler identified by the regular-expression pattern ContextAd Bot in the User-Agent request header. It is categorised as advertising. Use the regex above to detect, log, allow, or block ContextAd Bot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- ContextAd Bot
- Pattern
ContextAd Bot- Tags
- advertising
- Added
- 2018/06/27
- Instances
- 2 known sample(s)
Sample User-Agent strings
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0;.NET CLR 1.0.3705; ContextAd Bot 1.0)
ContextAd Bot 1.0
Block this crawler
robots.txt — disallow ContextAd Bot:
User-agent: ContextAd Bot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} ContextAd Bot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "ContextAd Bot") {
return 403;
}
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