DNS Leak Test

// DNS Leak Test

Testing DNS resolvers...

What Is a DNS Leak?

Every time you visit a website, your device sends a DNS (Domain Name System) query to translate the domain name into an IP address. Normally, a VPN routes these queries through its own secure DNS servers. A DNS leak occurs when these queries bypass the VPN tunnel and are sent to your ISP's DNS servers instead — exposing every website you visit to your internet provider.

DNS leaks are dangerous because they can reveal your entire browsing history to your ISP, even when you think you're protected by a VPN. Many VPN protocols, especially on older systems, fail to properly redirect DNS traffic, creating a silent privacy hole.

How Our DNS Leak Test Works

We generate 10 unique random subdomains and resolve them through a specialized DNS server. The server records which IP address made the DNS request — revealing the resolver handling your queries. If the resolver belongs to your ISP rather than your VPN provider, you have a DNS leak.

FAQ

What is a DNS leak?

A DNS leak occurs when your DNS queries are sent through your ISP's DNS servers instead of your VPN's secure DNS, revealing the websites you visit to your internet provider — even while connected to a VPN.

How do I fix a DNS leak?

Use a VPN with built-in DNS leak protection. You can also manually configure your device to use secure DNS servers (like 1.1.1.1 or 9.9.9.9) and enable DNS-over-HTTPS in your browser settings.

Can DNS leaks reveal my identity?

DNS leaks don't directly reveal your IP to websites, but they expose your browsing history to your ISP. Your ISP can log every domain you visit and may be required to share this data with authorities.

Why does my VPN have a DNS leak?

Common causes include: the VPN not redirecting DNS traffic, IPv6 DNS queries bypassing the tunnel, the operating system using cached DNS settings, or "smart multi-homed name resolution" in Windows overriding VPN DNS.