Chrome Privacy Preserving Prefetch Proxy

seo Chrome Privacy Preserving Prefetch Proxy

Chrome browser resource prefetching with privacy protection

About this crawler

Chrome Privacy Preserving Prefetch Proxy is a web crawler identified by the regular-expression pattern Chrome Privacy Preserving Prefetch Proxy in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block Chrome Privacy Preserving Prefetch Proxy 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: Chrome-Lighthouse

Technical details

Name: Chrome Privacy Preserving Prefetch Proxy
Pattern: Chrome Privacy Preserving Prefetch Proxy
Tags: seo
Reference: https://datadome.co/bots/chrome-privacypreserving-prefetch-proxy/
Added: 2026/04/17
rDNS suffixes: .1e100.net, .googlebot.com, .googleusercontent.com
Instances: 1 known sample(s)

rDNS verification (FCrDNS)

Verify a request is genuinely Chrome Privacy Preserving Prefetch Proxy 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.

.1e100.net
.googlebot.com
.googleusercontent.com

Sample User-Agent strings

Chrome Privacy Preserving Prefetch Proxy

Block this crawler

robots.txt — disallow Chrome Privacy Preserving Prefetch Proxy:

User-agent: Chrome Privacy Preserving Prefetch Proxy Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} Chrome Privacy Preserving Prefetch Proxy [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "Chrome Privacy Preserving Prefetch Proxy") { return 403; }

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