VPN Leak Test
VPN Leak Test
Check the main connection details visible to your browser and look for signs that your VPN may not be protecting your connection as expected.
What Is a VPN Leak Test?
A VPN is supposed to route your internet traffic through an encrypted connection and replace your normal public IP address with the VPN server’s address. A leak can expose information that you expected the VPN to protect.
The VPN Leak Test above checks several visible connection signals to help you identify potential problems with your VPN setup.
What does a VPN leak test check?
Depending on the test, a VPN leak check can examine your public IP address, IPv6 connectivity, WebRTC information, and DNS behavior. Looking at these areas together provides a better picture than checking your IP address alone.
Why check your IP address?
The simplest VPN check is your public IP address. When you connect to a VPN, your visible public IP should normally change to an address associated with the VPN connection.
If your normal IP remains visible after connecting to a VPN, that is a strong reason to investigate your connection before relying on it for privacy.
Why does IPv6 matter?
Some VPN configurations handle IPv4 traffic correctly but fail to account for IPv6 traffic. If your device has IPv6 connectivity and your VPN does not properly support or route it, your real IPv6 address may become visible.
What about WebRTC?
WebRTC uses ICE candidates to establish browser based connections. Those candidates can contain network address information, which is why WebRTC is commonly included in browser privacy diagnostics. :contentReference[oaicite:4]{index=4}
Can this test guarantee that my VPN is secure?
No. A clean leak test is useful, but it cannot prove that a VPN is completely private or secure. It does not evaluate the provider’s logging practices, encryption implementation, ownership, security audits, infrastructure, or other parts of its service.
For that reason, use this test alongside our VPN reviews and guides when choosing a VPN. You can also read our guide on changing your IP address and staying anonymous.
What should I do if I find a leak?
First, reconnect to your VPN and run the test again. If the problem remains, check your VPN application’s leak protection settings, IPv6 handling, DNS configuration, and WebRTC behavior.
You can also test another VPN to determine whether the problem is specific to your current provider or your device configuration.