UT-Dorkbot

scanner UT-Dorkbot

University of Texas security web crawler

About this crawler

UT-Dorkbot is a web crawler identified by the regular-expression pattern UT-Dorkbot in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block UT-Dorkbot traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

0.065%
latest snapshot
2026-06-04
matched key: UT-Dorkbot
2026-05-012026-06-040.11%

Technical details

Name
UT-Dorkbot
Pattern
UT-Dorkbot
Tags
scanner
Reference
https://security.utexas.edu/dorkbot
Added
2020/03/02
Instances
1 known sample(s)

Sample User-Agent strings

UT-Dorkbot/1.0

Block this crawler

robots.txt — disallow UT-Dorkbot:

User-agent: UT-Dorkbot Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} UT-Dorkbot [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "UT-Dorkbot") { return 403; }
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