WebRTC Leak Test

What Does This Tool Do?

WebRTC (Web Real-Time Communication) lets browsers establish peer connections for video calls and similar features. To do this, it queries STUN servers and can expose local and public IP addresses — even when you are connected through a VPN or proxy.

This test collects WebRTC ICE candidates from your browser and lists any IP addresses found. If you see multiple public IPs or an IP that differs from your VPN exit, your real address may be leaking. The test runs 100% client-side in your browser.

Related tools: Environment Readiness · IP Check · GPS Leak Test

Frequently Asked Questions

What is a WebRTC leak?

When WebRTC reveals your real IP address while you are using a VPN or proxy, exposing a second public IP to websites.

Should I worry about local (192.168.x.x) addresses?

Local LAN addresses are normal and not routable on the public internet. Focus on unexpected public IPs.

Does this test send data to ToolCheck?

No. Everything runs locally in your browser using a public STUN server.

How do I fix a WebRTC leak?

Disable WebRTC in your browser or VPN settings, use a VPN with WebRTC leak protection, or switch to a hardened anti-detect browser profile.