Princetonbot
Princeton University bot
About this crawler
Princetonbot is a web crawler identified by the regular-expression pattern Princetonbot in the User-Agent request header. It is categorised as academic. Use the regex above to detect, log, allow, or block Princetonbot 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
- Princetonbot
- Pattern
Princetonbot- Tags
- academic
- Reference
- http://tigress-web.princeton.edu/~fy/bot.html
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/600.1.4 (KHTML, like Gecko) Safari/600.1.4 (compatible; Princetonbot/1.0; +http://http://tigress-web.princeton.edu/~fy/bot.html)
Block this crawler
robots.txt — disallow Princetonbot:
User-agent: Princetonbot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Princetonbot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Princetonbot") {
return 403;
}
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