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foidproxy

Free tools

Request header viewer

The full set of headers your browser just sent us. Useful for checking what a proxy, a VPN or an anti-detect browser is adding or stripping before a request leaves your machine.

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13 headers received

accept
*/*
accept-encoding
gzip, br

Real browsers send a specific set. A short list suggests a scripted client.

cdn-loop
cloudflare; loops=1
cf-connecting-ip
216.73.216.239
cf-ipcountry
US
cf-ray
a54c6e196cfab6ed-CMH
cf-visitor
{"scheme":"https"}
cf-warp-tag-id
17312276-b69d-485f-a82d-75036f6bd3b5
user-agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

The client you are claiming to be. Mismatched with the TLS fingerprint is a common tell.

x-forwarded-for
216.73.216.239

Added by proxies. If your proxy leaks your real address, it shows up here.

x-forwarded-host
foidproxy.com
x-forwarded-port
3000
x-forwarded-proto
https

Reading the list

  • Cookies and authorization headers are stripped before this page renders them, so nothing sensitive is echoed back into the page.
  • The cf- headers are added by Cloudflare in front of this site. A target behind a different CDN will add its own instead, but your own headers reach it unchanged.
  • Run this through the proxy you are about to use. Anything appearing here that your browser did not send is being added in transit, and that is what gets a session flagged.

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The rest of the toolbox

What is my IP

Public IP, country, reverse DNS and ASN

User-agent parser

Decode browser, engine, OS and device

HTTP header checker

Status, redirect chain and security headers

Robots.txt tester

Check whether a path is allowed

Need the proxies behind the tools?

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