Free · no signup · used by proxy checkers

Proxy judge

A public endpoint that prints back the IP address and headers it receives. Send a request through a proxy and you see what a website sees: your own IP, the proxy’s, or nothing that gives either away.

$curl -x http://PROXY_IP:PORT https://pool.proxyspace.pro/judge.php

541,297 judge requests in the last 24 hours.

Endpoints

Address	Returns
`https://pool.proxyspace.pro/judge.php`	A greeting with the visiting IP, then every `REMOTE_`, `REQUEST_` and `HTTP_*` variable the server received.
`http://pool.proxyspace.pro/`	Only the visiting IP address, as plain text. Any path works.

What a response looks like

Welcome 203.0.113.7 :D

REQUEST_METHOD = GET
REMOTE_PORT = 51470
REMOTE_ADDR = 203.0.113.7
HTTPS = on
REQUEST_SCHEME = https
HTTP_USER_AGENT = curl/8.5.0
HTTP_ACCEPT = */*
REQUEST_URI = /judge.php
HTTP_HOST = pool.proxyspace.pro
REQUEST_TIME = 1792347465

REMOTE_ADDR is the address the judge saw the connection come from. Every line starting with HTTP_ is a header that arrived with the request, so a header the proxy added shows up here too.

Reading the result

Compare the response with your real IP address (the what is my IP tool shows it):

Transparent. Your real IP appears somewhere, usually in HTTP_X_FORWARDED_FOR, HTTP_FORWARDED or HTTP_CLIENT_IP. The site knows who you are.
Anonymous. Your IP is gone, but the proxy announces itself with headers such as HTTP_VIA or HTTP_PROXY_CONNECTION. The site knows a proxy is involved.
Elite. REMOTE_ADDR is the proxy’s address and there is no trace of a proxy or of you. The request looks like it came from the proxy itself.
No response. The proxy is dead, refused the connection or timed out. Most addresses on public lists end up here, which is why you check them.

Examples

# HTTP proxy
curl -x http://203.0.113.7:8080 https://pool.proxyspace.pro/judge.php

# SOCKS5 proxy, DNS resolved by the proxy
curl --socks5-hostname 203.0.113.7:1080 https://pool.proxyspace.pro/judge.php

# Python
import requests
r = requests.get("https://pool.proxyspace.pro/judge.php",
                 proxies={"https": "http://203.0.113.7:8080"}, timeout=10)
print(r.text)

Where to get proxies to test

The HTTP, HTTPS, SOCKS4 and SOCKS5 lists are refreshed every 20 minutes. They are collected from public sources and not tested by us, so running them past the judge is exactly the step that separates working proxies from dead ones.

FAQ

What is a proxy judge?

A web page that prints back what it received: the IP address the request came from and every HTTP header. Send a request through a proxy to the judge and you see exactly what any website would see through that proxy.

Can I use the judge in my proxy checker?

Yes. Point your checker at https://pool.proxyspace.pro/judge.php. It is free and needs no key. It is a shared service, so keep the rate reasonable; if you check very large lists all day, run your own copy (the script is twelve lines of PHP).

Does the judge measure speed or test whether a proxy works?

No. It only reports what arrives. Whether the request arrived at all, and how long it took, is something your checker measures on its side.

What does the plain-HTTP address do?

http://pool.proxyspace.pro/ answers with nothing but the visiting IP address as plain text. Checkers use it through HTTP-only proxies to learn the exit IP.