Free DNS Leak Test

DNS leaks are usually caused by operating system network defaults. For instance, Windows has features like "Smart Multi-Homed Name Resolution" which sends DNS requests to all available network adapters simultaneously, choosing the fastest response. If your local adapter answers faster than your encrypted VPN adapter, your DNS queries leak out in plaintext over your local connection.

When you run our test with your VPN connected, look at the results. If you see the name of your real Internet Service Provider (like Comcast, BT, or Telstra) or servers located in your actual physical home country, your DNS is leaking. If you only see servers belonging to your VPN provider or secure third parties (like Cloudflare or Google DNS), your connection is secure.

The primary risk is the complete loss of anonymity. Your ISP can log every website you visit, potentially selling your data to advertisers or handing it over to authorities. In countries with strict internet censorship, a DNS leak can expose you to legal risks if you attempt to access blocked content, even if you thought your VPN was active.

First, ensure you are using a premium VPN client with built-in "DNS Leak Protection" enabled in the settings. Second, you can manually configure your operating system to use secure, private DNS servers (such as Cloudflare's 1.1.1.1 or Google's 8.8.8.8) instead of your ISP's default servers. Third, disabling WebRTC in your web browser also prevents similar IP and routing exposure.

A standard test checks a single round of DNS queries to identify your active DNS servers. An extended test sends multiple rounds of randomized queries over a longer period. This is crucial because some operating systems or routers randomly rotate DNS queries back to local servers over time, meaning a leak might only show up during an extended check.

No. Custom DNS servers keep your DNS queries away from your ISP's logs, but they do not encrypt your actual web traffic or mask your IP address. Your ISP can still see the exact IP addresses of the servers you are communicating with and the data payloads you exchange. A custom DNS only secures the "address lookup" stage, whereas a VPN encrypts everything.