P
PTST
PTST monitoring tool
About this crawler
PTST is a web crawler identified by the regular-expression pattern PTST in the User-Agent request header. It is categorised as monitoring. Use the regex above to detect, log, allow, or block PTST 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
- PTST
- Pattern
PTST- Tags
- monitoring
- Added
- 2026/05/09
- Instances
- 6 known sample(s)
Sample User-Agent strings
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; MDDS; PTST 2.386)
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E; PTST 2.386)
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; Data Center; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; PTST 2.386)
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; PTST 2.295)
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; GWX:RED; PTST 2.386)
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; PTST 2.386)
Block this crawler
robots.txt — disallow PTST:
User-agent: PTST
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} PTST [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "PTST") {
return 403;
}
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