WebRTC Leak Test — is your real IP exposed?
WebRTC can reveal your real public and local IP addresses to any website — even while you use a proxy or VPN. Run the free check: if the IP WebRTC exposes does not match the identity you intend to show, your profiles can be linked.
How it works: the WebRTC check runs entirely in your browser using a public STUN server — nothing is sent to BeastBrowser. To show your IP-based location for comparison, the page makes one standard geolocation lookup (ipwho.is), the same kind any website can make. BeastBrowser does not receive or store your results.
One leaked IP can link every account you run
BeastBrowser gives every profile its own isolated fingerprint and proxy identity — unlimited profiles, one flat $30/month, on Windows and Mac. Free plan included, no card needed.
See plans — start freeWhat is a WebRTC leak?
WebRTC is built into modern browsers for voice, video and peer-to-peer connections. To set those connections up, the browser gathers ICE candidates — and those candidates can include your real public IP address and your local network IP, readable by any website's JavaScript. A proxy or VPN changes the IP a website normally sees, but a WebRTC leak can quietly hand over the real one anyway.
Why it matters for multi-account work
- Platforms treat a shared IP as a link between accounts — one leak can connect profiles you meant to keep separate.
- A public IP that contradicts your profile's proxy country is a classic automation/bot signal.
- A local IP leak fingerprints your actual machine and network, not the identity you configured.
Run this test inside every browser profile you rely on. The result should match that profile's intended identity — if it shows your home IP instead, the profile is not isolated.
Also check your fingerprint
Your IP is only half the story. Our free Browser Fingerprint Test shows the device identity websites see — canvas, WebGL, timezone, fonts and more — with the same no-signup, nothing-stored approach.