DNS Leak Test

Check if your DNS queries are leaking outside your VPN tunnel.

A DNS leak occurs when your DNS queries bypass your VPN tunnel and travel through your ISP's DNS servers instead. Our DNS leak test detects IP leaks by comparing your public IP with DNS resolver's view.

Result

Click "Test DNS" to check for DNS leaks.
In Action

DNS Leak Test in action

You just subscribed to a VPN "for privacy". Run the leak test and it shows your queries still go to your ISP's resolver. Armed with the screenshot, you either fix the VPN settings or switch providers — the test turns marketing claims into verifiable facts.

Frequently Asked Questions

What is a DNS leak?

A DNS leak occurs when your DNS queries are sent through your ISP's DNS servers instead of the VPN's, potentially exposing your browsing activity.

How do I test for DNS leaks while using a VPN?

Run the test while your VPN is connected. It compares the DNS resolver you are using against your VPN provider — if the resolver belongs to your ISP instead, your DNS queries are leaking outside the tunnel.

What does a DNS leak actually expose?

Every domain you visit is sent to the leaking resolver, which is usually your ISP. That means your browsing history is visible to the ISP even though web traffic goes through the VPN — defeating the point of the VPN.

How do I fix a DNS leak?

Enable DNS-over-HTTPS in your browser, use a VPN with built-in DNS filtering, or configure your system DNS to a privacy resolver. After each change, rerun this test to confirm the leak is gone.