WebRTC Leak Detection

Is WebRTC exposing your real IP address?

November 30, 2025

WebRTC (Web Real-Time Communication) enables browser-to-browser communication for video calls, file sharing, and more. However, it can also leak your real IP address, even when you're using a VPN.

How WebRTC Leaks Happen

STUN Requests

WebRTC uses STUN servers to discover your public IP for peer-to-peer connections. These requests bypass VPN tunnels.

ICE Candidates

During connection setup, your browser reveals both local and public IP addresses through ICE candidate gathering.

What We Test

Local network IP addresses (192.168.x.x, 10.x.x.x)
Public IPv4 address
IPv6 address (if available)
WebRTC API availability
STUN server connectivity

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VPN Users Take Note

If you're using a VPN, this test will reveal whether your VPN properly blocks WebRTC leaks. Many VPNs require additional configuration or browser extensions to prevent these leaks.