IRLbot
Texas A&M University academic research web crawler bot
About this crawler
IRLbot is a web crawler identified by the regular-expression pattern IRLbot in the User-Agent request header. It is categorised as academic. Use the regex above to detect, log, allow, or block IRLbot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.26%
Technical details
- Name
- IRLbot
- Pattern
IRLbot- Tags
- academic
- Reference
- http://irl.cs.tamu.edu/crawler
- Added
- 2026/04/26
- Instances
- 1 known sample(s)
Sample User-Agent strings
IRLbot/3.0 (compatible; MSIE 6.0; http://irl.cs.tamu.edu/crawler)
Block this crawler
robots.txt — disallow IRLbot:
User-agent: IRLbot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} IRLbot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "IRLbot") {
return 403;
}
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