NextProxy

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Proxy anonymity checker

See whether a proxy actually hides the real IP. Six HTTP headers decide Elite / Anonymous / Transparent, with a 0–100 score.

How proxy anonymity works

What each grade means, and how leaks show up.

Headers we read

X-Forwarded-For

Forwards the original client IP. Presence usually means a leak.

X-Real-IP

Another header that may carry the client IP.

Via

Marks that a proxy was used. Advertises the proxy, not always the real IP.

Proxy-Connection

Similar to Via.

X-Proxy-ID

A proxy’s own identifier.

Forwarded

Standardized forwarding header; may include the real IP.

Leak types

  1. IP leak — forwarding headers hand the real IP to the target. This tool reads those six headers.
  2. DNS leak — DNS may bypass the proxy. This page only scores HTTP headers.
  3. WebRTC leak — STUN may report another address. Use IP & browser inspection for that.

Use cases

Use caseGradeWhy
ScrapingEliteHarder to fingerprint as a proxy
SocialEliteLess likely to glue accounts to one egress
SEO / SERPElite / AnonymousFewer personalized results
StreamingAnonymousA different regional exit is enough
CachingTransparentNot meant to hide the IP

Help

FAQ

01What is proxy anonymity?

How well the proxy hides the real IP. Elite is clean, Anonymous hides the IP but is still detectable, Transparent leaks the IP in headers.

02How do you find the real IP?

The server fetches an echo through the proxy you submitted. If X-Forwarded-For / X-Real-IP / Forwarded contain the client IP from this page, it is a leak.

03Which proxy protocols are supported?

HTTP, HTTPS, SOCKS4, and SOCKS5. SOCKS5 supports username/password authentication; SOCKS4 uses USERID only. The test target is fixed to the echo service.

04Will you use my proxy against other hosts?

The target is a fixed echo, with an 8s timeout, and private addresses are rejected. We do not fetch arbitrary URLs through user proxies.

05Is it free?

Yes, with a rate limit, and no account required.

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