DNS Leak Test
Check whether your DNS queries are leaking outside your VPN tunnel to your real ISP.
DNS resolver addresses used by your browser are detected and compared against your VPN. Click Start Test; the test resolves special domains and identifies which DNS servers respond.
What does this test measure?
DNS resolver addresses used by your browser are detected and compared against your VPN.
Why is this test important?
Check whether your DNS queries are leaking outside your VPN tunnel to your real ISP.
How do you run the test?
Click Start Test; the test resolves special domains and identifies which DNS servers respond.
How should results be interpreted?
If DNS servers from your ISP appear while on a VPN, your DNS is leaking.
Normal and problematic results
If DNS servers from your ISP appear while on a VPN, your DNS is leaking.
Technical limitations
Split-tunnel VPNs intentionally route some traffic outside; that may appear as a leak.
Why can the score decrease?
Unstable measurements, denied permissions, unsupported browser APIs, background load, power saving, or an incomplete test can affect the result. When a score changes, the result screen explains the reason.
What should you do if a problem is found?
Enable DNS leak protection in your VPN app, or configure custom encrypted DNS.
Example Result Explanation
Frequently Asked Questions
Does this test provide a definitive hardware diagnosis?
No. The test measures signals the browser can safely access and clearly explains its technical limits.
Why can results change between runs?
Background applications, power mode, network conditions, permissions, and operating-system timing can affect results.
How should I repeat the test if I see a problem?
Repeat it on the same device and browser while changing only one condition, so the source of the difference is easier to identify.