IPv6 Leak Test

IPv6 Leak Test - Is your IP address leaked?

A VPN is often used to hide your IP address in order to surf anonymously on the Internet. However, a wrong configuration by the user or the VPN software can lead to a leak of the original IP address or other sensitive information. The EXPERTE.de IPv6 Leak Test checks if your private IPv6 address is leaked even if the VPN is activated.

Note: For the test to produce meaningful results, you must be connected to a VPN.

What is an IPv6 leak?

IPv6 is a new Internet protocol that is expected to replace the currently used IPv4 in the future. However, many computers, networks and websites are already fully IPv6 capable. If you now want to visit a website that is only accessible via IPv6, your computer will use IPv6 to access it. If your VPN is configured for IPv4 only, your original IPv6 address will be visible.

What information is leaked?

Due to an IPv6 leak, the called website will see your original IPv6 address. If you use a VPN especially to surf anonymously, this protection is undermined.

How does the IPv6 Leak Test work?

To determine whether you are affected by an IPv6 leak, we perform the following steps.

  1. We make a request from your browser to a page that is only accessible via IPv6.
  2. If your computer or network supports IPv6, it will access this page via IPv6.
  3. We receive the request and now know your IPv6 address.
  4. We compare the owner of your IPv6 address with the owner of your IPv4 address. If these data do not match, there may be a DNS leak.
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