IPv6 Test
Does your connection support IPv6? The test runs in your browser as soon as the page loads.
Testing Checking your connection…
| Check | Result | Address |
|---|---|---|
| IPv6 connectivity | Testing | – |
| IPv4 connectivity | Testing | – |
| Protocol used to reach this site | Testing | – |
Your browser asks api.ipify.org (IPv4 only) and api6.ipify.org (IPv6 only) directly.
How to use this tool and read the results
The test runs in your browser. It asks two address services that each answer over only one protocol, one IPv4-only and one IPv6-only, and asks our server which protocol your browser used to reach it. Together they show whether your connection can use IPv6 and which protocol it prefers.
How to read the results:
- IPv6 supported: your connection has a public IPv6 address and can reach IPv6-only sites.
- IPv4 only: no IPv6 address answered. Your provider may not offer IPv6, or it is turned off on your router.
- Preferred protocol shows which one your browser picked for this site. With both available, browsers try both and use whichever connects first.
If the test fails, the guide on how to test IPv6 walks through router and device checks, and IPv4 vs IPv6 explains what the difference means. To see the location and provider behind your address, use What is my IP.
Frequently asked questions
What does this IPv6 test check?
Whether your browser can reach an IPv6-only address service, whether it can reach an IPv4-only one, and which protocol it used to reach our server.
Why does the test say IPv4 only?
Your connection has no working public IPv6 address. Most often your provider does not offer IPv6 on your plan, or IPv6 is turned off on your router. A VPN can also hide IPv6.
Do I need IPv6?
Not yet for most sites, which still support IPv4. IPv6 avoids address sharing on some mobile and fixed-wireless networks, and some games and peer-to-peer apps connect more reliably with it.
Does the test store my addresses?
No. Your browser asks the address services directly, and our server only sees the address it uses to reach this site, as any website does.