Is your VPN actually protecting you?
Run a free, instant leak test. See exactly what websites, apps and your internet provider can see about you right now — and whether your VPN is quietly leaking your real identity.
Your IP address
WebRTC leak
IP version / IPv6
Close every leak with one tap
NvoVPN blocks WebRTC and IPv6 leaks automatically, hides your real IP, and keeps working even where other VPNs are blocked. Start free — no card required.
Try NvoVPN free Get the appWhat is a VPN leak?
A VPN is supposed to route all of your traffic through an encrypted tunnel so that websites and your internet provider only see the VPN server's IP address — not yours. A VPN leak happens when part of your traffic escapes that tunnel and exposes your real IP address, location or DNS requests. You can be connected to a VPN and still be leaking. This test checks the most common leaks in seconds, right in your browser.
WebRTC leak
WebRTC is a feature built into Chrome, Firefox, Edge and other browsers for real-time voice and video. To connect peers directly, it can ask a public STUN server for your real public IP address — outside the VPN tunnel. If your real IP shows up in the WebRTC test above while you are connected to a VPN, websites can see who you really are.
IPv6 leak
Many VPNs only tunnel IPv4 traffic. If your network also has IPv6 and the VPN does not handle it, your IPv6 address can leak directly to websites. A properly built VPN either tunnels IPv6 too or disables it while connected.
DNS leak
Every time you open a website, your device asks a DNS server to translate the name into an IP address. If those requests go to your provider instead of the VPN, your provider can still see every site you visit. A trustworthy VPN routes DNS through its own encrypted resolvers.
How to fix VPN leaks
- Use a VPN that blocks WebRTC and IPv6 leaks at the app level — not just in the browser.
- Turn on the VPN's kill switch so traffic is cut if the tunnel drops.
- Disable WebRTC in your browser if you never make in-browser calls.
- Prefer a VPN with its own private DNS resolvers and a verified no-logs policy.
NvoVPN handles all of this automatically — WebRTC and IPv6 leak protection, a kill switch and private DNS are on by default.
Frequently asked questions
Does this test store my IP address?
No. The test runs in your browser and the IP lookup is not logged. We only read what your connection already sends to every website you visit.
Why does the test show a leak even with my VPN on?
Because a connected VPN indicator does not guarantee that every channel is tunneled. WebRTC and IPv6 are the usual culprits — they can bypass a VPN that does not explicitly block them.
Is a free VPN enough to prevent leaks?
Many free VPNs leak WebRTC/IPv6 or log your activity. Leak protection, a kill switch and private DNS are what actually keep you covered.
Which browsers can leak through WebRTC?
Chrome, Firefox, Edge, Brave and Opera all support WebRTC and can leak your IP if it is not blocked.