IP Leak Test
Check whether WebRTC, IPv6, HTTP headers or browser fingerprinting are exposing your real identity. Run this while connected to a VPN to verify none of these channels leak.
United States, Columbus
Amazon Web Services
For DNS-specific testing, use the DNS Leak Test.
What Does This Test Check?
WebRTC Leak
WebRTC is a browser API for real-time communication. It uses STUN servers to discover IP addresses, including your real IP, which can bypass VPN tunnels. This test creates a peer connection and checks what IPs are exposed.
IPv6 Leak
Many VPNs tunnel only IPv4 traffic. If your system has an IPv6 address and the VPN doesn't handle it, your IPv6 address leaks on every connection to dual-stack servers.
HTTP Header Leak
Proxies and improperly configured VPNs can inject headers like X-Forwarded-For into your requests, revealing your real IP to the destination server.
Browser Fingerprint
Even without an IP leak, websites can identify you by combining browser properties - screen resolution, fonts, canvas rendering, timezone and more. This is harder to hide than an IP address.