Turnitin

academic Turnitin

Turnitin plagiarism detection web crawler

About this crawler

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

Block-rate · top 25k sites

0.26%
latest snapshot
2026-06-04
matched key: Turnitin
2026-05-012026-06-040.48%

Technical details

Name
Turnitin
Pattern
Turnitin
Tags
academic
Reference
http://www.turnitin.com
Added
2010/09/26
rDNS suffixes
.turnitin.com
Instances
2 known sample(s)

rDNS verification (FCrDNS)

Verify a request is genuinely Turnitin with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.

Sample User-Agent strings

TurnitinBot (https://turnitin.com/robot/crawlerinfo.html)
Turnitin (https://bit.ly/2UvnfoQ)

Block this crawler

robots.txt — disallow Turnitin:

User-agent: Turnitin Disallow: /

Apache .htaccess — return 403:

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

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "Turnitin") { return 403; }
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