Is Your VPN Leaking? Run a Free DNS Leak Test

Instantly find out if your ISP is tracking your browsing history. Our precise tool detects hidden DNS leaks to ensure your VPN is truly private.

Running DNS leak test...

We don't log your data. Your privacy is our priority.

Understanding Your Test Result

Below you can see all possible statuses the DNS Leak test may display, ordered from best to worst protection.

Possible statuses (from best to worst protection)

Protected DNS Protected – Your ISP cannot track your browsing history. All queries are encrypted.

No VPN Detected Standard Browsing Mode – Your DNS queries are visible to your ISP. (No VPN detected)

Status Unavailable We couldn't retrieve DNS data. Please check your connection and refresh.

DNS LEAK DETECTED! Your privacy is compromised. Your ISP can see every site you visit.

What is a DNS Leak?

Every time you visit a website, your device sends a DNS query to translate the domain name (e.g., google.com) into an IP address. When using a VPN, these queries should travel through the VPN tunnel to the VPN provider's DNS servers — keeping your browsing private.

A DNS leak occurs when your DNS queries bypass the VPN tunnel and go directly to your ISP's DNS servers instead. This means your ISP — and anyone monitoring DNS traffic — can see every website you visit, even though you think you're protected by a VPN.

DNS leaks are one of the most common VPN failures. Your traffic is encrypted, but your browsing activity is still visible through DNS — a classic false sense of security.

How Does This Test Work?

This test checks which DNS server is resolving your queries and where it is located:

Your public IP address is detected via ipify.org
The DNS resolver location is identified via api.ipapi.is — this shows the country from which your DNS queries originate
If you are using a VPN, your DNS resolver should be in the same location as your VPN server — if it is in your real country instead, your DNS is leaking
If you are not using a VPN, the result shows your DNS server location for informational purposes

Why Does a DNS Leak Happen?

VPN misconfiguration: Some VPN clients do not force DNS through the tunnel by default
IPv6 DNS: If your VPN only tunnels IPv4 traffic, IPv6 DNS queries can bypass it entirely
Windows DNS Smart Multi-Homing: Windows may send DNS queries to multiple servers simultaneously — including your ISP's — and use whichever responds first
Browser DNS-over-HTTPS (DoH): Some browsers use their own DNS resolver (e.g., Cloudflare) regardless of your VPN settings
Split-tunnel VPN: When split tunneling is enabled, DNS for certain apps may go outside the tunnel

How to Fix a DNS Leak?

Use a VPN with DNS leak protection: Most reputable VPNs (NordVPN, Mullvad, ProtonVPN) include built-in DNS leak protection that forces all DNS through the tunnel
Enable Kill Switch: A VPN kill switch blocks all traffic if the VPN drops — preventing DNS from falling back to your ISP
Disable IPv6 if your VPN doesn't support it: Unprotected IPv6 DNS is a common leak source
Set custom DNS manually: Configure your operating system to use a privacy-focused DNS server (e.g., 1.1.1.1 or 9.9.9.9) — though this does not guarantee protection without a proper VPN
Disable WebRTC in your browser: WebRTC can also expose your real IP independently of DNS (see our WebRTC Leak Test)

The Verdict: Protect Your DNS

DNS leaks silently expose your browsing to your ISP — even when you're connected to a VPN. The fix is simple: use a VPN that enforces DNS leak protection by default.

The VPNs below have been tested for DNS leak protection and passed. They route all DNS through their own servers and include a kill switch to prevent fallback.

View VPNs with DNS Leak Protection →