Perplexity-User
Perplexity user web crawler bot
About this crawler
Perplexity-User is a web crawler identified by the regular-expression pattern Perplexity-User in the User-Agent request header. It is categorised as ai-fetcher, search-engine. Use the regex above to detect, log, allow, or block Perplexity-User traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
1.8%
Technical details
- Name
- Perplexity-User
- Pattern
Perplexity-User- Tags
- ai-fetcher, search-engine
- Reference
- https://docs.perplexity.ai/docs/resources/perplexity-crawlers
- Added
- 2026/04/07
- rDNS suffixes
.perplexity.ai- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely Perplexity-User 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.
.perplexity.ai
Sample User-Agent strings
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Perplexity-User/1.0; +https://perplexity.ai/perplexity-user)
Block this crawler
robots.txt — disallow Perplexity-User:
User-agent: Perplexity-User
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Perplexity-User [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Perplexity-User") {
return 403;
}
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