What is DNS Leak Test and why is it needed?
DNS Leak Test is a tool for checking DNS, WebRTC, and IPv6 leaks when using a proxy or VPN. The service helps determine whether your real internet provider and location are hidden while you are working online.
When connecting to websites, the browser sends DNS requests to determine the IP address of the required domain. If these requests do not go through the proxy or VPN but directly through the user’s provider, a DNS leak occurs. In this case, websites, advertising networks, or anti‑fraud systems may detect the user’s real geolocation and connection.
DNS Leak Test checks which DNS servers process your requests, detects WebRTC and IPv6 leaks, and helps ensure that internet traffic truly passes through the proxy or VPN.
What the tool checks
- DNS servers used by the browser
- DNS leak through the internet provider
- WebRTC leak
- IPv6 leak and IPv6 availability
- DNS and current IP address consistency
- Potential anonymity issues
What DNS leak means in simple terms
A DNS leak is a situation where your browser or operating system continues to send DNS requests through your internet provider even when you are using a proxy or VPN. As a result, websites may see the user’s real country, provider, or part of the network infrastructure.
Can a proxy hide a DNS leak
Not always. Some proxies and VPNs hide only the IP address, while DNS requests still go directly through the provider. Therefore, for safe operation, it is important to additionally check DNS, WebRTC, and IPv6.
When you should use DNS Leak Test
- After connecting a proxy or VPN
- When configuring antidetect browsers
- Before launching automation or scraping
- To verify connection anonymity
- When working with multi‑accounting
- After changing DNS or network settings
Why DNS Leak matters
DNS leaks can lead to de‑anonymization of the connection, additional checks from anti‑fraud systems, and issues when working with services sensitive to network fingerprints. Regular DNS Leak checks help ensure that traffic is routed correctly and does not reveal the user’s real connection.
What leaks DNS Leak Test can detect
The tool helps detect:
- DNS leak
- WebRTC leak
- IPv6 leak
- Real IP address exposure
- DNS and proxy mismatch
- VPN or antidetect browser misconfiguration