DNS Leak Test

Check if your VPN is leaking DNS requests. A DNS leak exposes your browsing activity to your ISP even when connected to a VPN.

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A DNS leak exposes your browsing activity even when using a VPN. This test checks if your DNS requests are secure.

Click "Run Test" to check for DNS leaks

What Is a DNS Leak?

When you type a website address into your browser, your device sends a DNS (Domain Name System) query to translate the domain name into an IP address. Without a VPN, these queries go to your ISP's DNS servers, allowing them to see every website you visit.

A properly configured VPN routes all DNS queries through its own secure DNS servers. However, some VPNs fail to do this correctly, causing a "DNS leak" where your browsing activity is exposed despite the VPN connection.

Why DNS Leaks Are Dangerous

DNS leaks undermine the primary purpose of using a VPN — privacy. If your DNS requests leak outside the VPN tunnel, your ISP can see which websites you visit, when you visit them, and build a profile of your online activity. This data can be sold to advertisers, shared with government agencies, or exposed in data breaches.

How LimeVPN Prevents DNS Leaks

LimeVPN uses its own private DNS servers and forces all DNS queries through the encrypted VPN tunnel. Combined with our kill switch and IPv6 leak protection, your browsing activity stays completely private.

Frequently Asked Questions

What is a DNS leak? ▼
A DNS leak occurs when your DNS queries bypass your VPN tunnel and are sent to your ISP's DNS servers instead. This exposes the websites you visit to your ISP, even though your internet traffic is encrypted by the VPN.
How does a DNS leak test work? ▼
A DNS leak test checks which DNS servers are handling your requests. It makes DNS queries and identifies the IP addresses of the resolvers. If the resolvers belong to your ISP instead of your VPN provider, you have a DNS leak.
What causes DNS leaks? ▼
DNS leaks can be caused by misconfigured VPN software, operating system settings that override VPN DNS, IPv6 traffic not being routed through the VPN, or VPN disconnections without a kill switch.
How do I fix a DNS leak? ▼
To fix a DNS leak: use a VPN with built-in DNS leak protection like LimeVPN, enable the kill switch, disable IPv6 if your VPN doesn't support it, and configure your system to use your VPN's DNS servers.
What is a WebRTC leak? ▼
WebRTC (Web Real-Time Communication) is a browser feature that can reveal your real IP address even when using a VPN. Our test checks for WebRTC leaks alongside DNS leaks to give you a complete picture of your privacy.