Proxy connection guide

What is an IP leak?

What is an IP leak?: how the mechanism works, how to reproduce it, and what it means for dedicated static residential operation.

Quick answer

An IP leak is any path that reveals your real address while a proxy is active: WebRTC candidates, DNS lookups, or plugins making direct connections.

Direct definition
How the mechanism works
Reproducible commands
Static-residential implication

When this is the right fit

  • Direct definition
  • How the mechanism works
  • Reproducible commands

Who this page is for

What is an IP leak?: how the mechanism works, how to reproduce it, and what it means for dedicated static residential operation.

An IP leak is any path that reveals your real address while a proxy is active: WebRTC candidates, DNS lookups, or plugins making direct connections.

How it works, step by step

  1. 1

    Direct definition

    An IP leak is any path that reveals your real address while a proxy is active: WebRTC candidates, DNS lookups, or plugins making direct connections.

  2. 2

    How leaks happen

    Browsers open channels that do not always honor proxy settings - WebRTC's STUN, prefetchers, and plugin traffic are the common ones.

  3. 3

    What it means for static residential buyers

    Leaks break the one-identity-per-profile model. Test each profile and close the channels (disable WebRTC, remote DNS, no direct plugins).

  4. 4

    Reproducible check

    In the profile, load a leak-test page: it should show the endpoint address and no local candidates.

Sources

Facts last reviewed 2026-09-01.

Failure interpretation

If the reproducible check fails or shows unexpected values, the identity path is not what you think: re-check the endpoint values, the protocol, and any local interception before assuming a target problem.

195+ countries
99.9% uptime guarantee
Unlimited bandwidth
4.9/5 from 127 ratings

Frequently asked questions

Does what is an ip leak? matter for managed accounts?

Yes - it is one of the signals that ties a profile to one identity. Configure it once per profile and verify it in the periodic connection audit.

Choose one stable proxy for every active profile

Buy self-serve now, or talk with us about a larger agency inventory.