How to read this IPv6 test
If the test shows a public IPv6 address, your browser can reach an IPv6-only endpoint. If it shows no IPv6, your connection may still work normally over IPv4, but IPv6 is unavailable from this browser path. VPNs, routers, ISP settings, corporate networks, and browser security tools can all affect the result.
Why IPv6 matters
IPv6 provides a much larger address space than IPv4 and is increasingly common on mobile, fiber, and modern ISP networks. It can coexist with IPv4, which is why one device may show both addresses on the home page. To learn the basics, read What Is an IP Address?.
Related privacy and network checks
After testing IPv6, you can use IP Lookup to inspect any public IPv6 address, ASN Lookup to identify the network owner, and the WebRTC leak test to see whether your browser exposes additional network candidates.
Frequently asked questions
What does an IPv6 test check?
An IPv6 test checks whether your browser can reach an IPv6-only service and shows the public IPv6 address if one is available.
Why do I have IPv4 but no IPv6?
Your ISP, router, VPN, device, or network policy may not support IPv6. Many connections still work normally over IPv4 only.
Can a VPN change my IPv6 result?
Yes. Some VPNs provide IPv6, some block it to prevent leaks, and some route only IPv4. Run the test with the VPN on and off to compare.