What is a DNS leak? What are the benefits of choosing?

Posted by: Teamzababy

Posted on: 18/09/2025

When it comes to playing online games, many people think of VPNs as the main tool for bypassing servers or solving lag issues. But did you know that even with a VPN, you're still at risk of data leaks? This is called a DNS leak, a silent threat that can immediately alert your ISP or the game about which server you're accessing. This article will introduce you to what a DNS leak is and why it's important.

What is a DNS leak?

A DNS leak occurs when DNS (Domain Name System) requests, or the conversion of website/game names to IP addresses, are leaked directly to the internet service provider (ISP) instead of being routed thru a VPN as they should be. The result is that even though we are connected to a VPN, the ISP or third parties can still see what websites we are visiting or what games we are playing. This compromises privacy, risks being blocked from foreign game zones, and leads to high and unstable ping issues when playing online games.

Causes of DNS Leak

The reason DNS leaks occur is because the network system is not forced to run completely thru the VPN, resulting in some DNS requests escaping to other routes. The main causes commonly encountered are as follows:

The DNS is originally from the internet service provider (ISP) instead of using the VPN's DNS.
IPv6 is working, but VPN is not supported.
The VPN you are using does not have DNS leak protection.
WebRTC in the browser can expose our IP and DNS.

WebRTC is a technology that enables real-time communication between browsers, such as video calls or direct file sharing (peer-to-peer).

How to prevent DNS leaks

Even with a VPN connected, if you experience a DNS leak, your privacy is still not secure. So let's take a look at some simple prevention methods that will help you play games and use the internet smoothly without worry.

Use a VPN with DNS leak protection features.
Disable IPv6 if your VPN doesn't support it.
Disable or limit WebRTC functionality in your browser.
Force the VPN's DNS servers only, not the ISP's DNS servers.
Enable the Kill Switch to immediately block the connection if the VPN drops.

VPN4Games DNS Leak Protection

For serious gamers, choosing a VPN isn't just about connecting and getting into the game; you also need to ensure your data won't leak. VPN4Games comes with a DNS Leak Protection feature, ensuring your gaming sessions won't be intercepted, blocked, or compromise your privacy.

DNS Leak: Something many overlook, but the impact can be severe for gamers as it can lead to data leaks, game blocking, or unknowingly experiencing high ping. The best solution is to choose a VPN with DNS Leak Protection. However, if you want to play games on foreign servers that haven't been released in Thailand yet, VPN4Games is a must-try option. With over 100 servers in 20 countries to reduce lag and ping, you can enjoy online gaming without interruption. If you want to bypass restrictions and dive into new games, VPN4Games is the only answer.