DNS Leak Test — Is Your VPN Leaking?
Check if your DNS requests are leaking outside your VPN tunnel. DNS leaks expose the websites you visit to your ISP, even when connected to a VPN.
DNS Leak Test
Check if your DNS requests are leaking outside your VPN tunnel. DNS leaks expose the websites you visit to your ISP, even when connected to a VPN.
What Is a DNS Leak?
When you use a VPN, all your internet traffic — including DNS requests — should go through the encrypted VPN tunnel. A DNS leak occurs when your DNS queries bypass the VPN and go directly to your ISP's DNS servers. This means your ISP can still see which websites you visit, defeating the purpose of using a VPN.
Why Are DNS Leaks Dangerous?
DNS leaks compromise your privacy because your ISP can log every website you visit. In countries with strict internet censorship, this could put you at risk. Even in free countries, ISPs can sell your browsing data to advertisers.
How to Prevent DNS Leaks
Use a VPN with built-in DNS leak protection and a kill switch. Top VPNs like NordVPN run their own private DNS servers and automatically block DNS requests from leaving the VPN tunnel.
Frequently Asked Questions
Best VPNs with DNS Leak Protection

ProtonVPN
Swiss-based VPN with strongest privacy focus and free tier.

Mullvad VPN
Privacy-first VPN with anonymous account creation and flat pricing.

NordVPN
Industry-leading VPN with exceptional speed and security features.