IPv6 Compatibility Test

Check if your connection supports IPv6. This test runs in your browser and tries to reach IPv6-capable services. You'll see whether you have a public IPv6 address and if you can access IPv6 resources. No server-side test — it uses your actual connection.

FreeBrowser TestNo Signup

Test IPv6 Compatibility

Click to run the test. Results appear below.

How to Use This Tool

Click "Run Test" and wait a few seconds. The test runs in your browser: it fetches from services that return your public IP. If the response comes over IPv6, we report IPv6 compatible. If not, we report IPv4 only. No data is sent to our server for this test — it's all client-side requests to third-party IPv6 check services.

Why This Tool Matters

IPv4 address space is exhausted. IPv6 is the long-term replacement. Many ISPs now offer IPv6 (often dual-stack with IPv4). Knowing whether you have IPv6 helps with troubleshooting, choosing services, and understanding your network. Some sites and APIs prefer or require IPv6.

Use Cases

  • Check if your home or office connection has IPv6
  • Troubleshoot "site works for others but not me" when the site is IPv6-preferring
  • Verify VPN or mobile hotspot IPv6 support
  • Confirm IPv6 configuration after ISP or router changes

FAQs

What does IPv6 compatibility mean?

It means your network and browser can reach the internet over IPv6. Many sites still use IPv4; this test checks if you can access IPv6-only or dual-stack resources.

Why would I need IPv6?

IPv4 addresses are scarce. IPv6 is the future. Some networks and services are IPv6-only or prefer IPv6. Knowing your compatibility helps with troubleshooting and future-proofing.

What if I don't have IPv6?

Most home networks still use IPv4. You can usually reach IPv4 sites. Some ISPs provide IPv6; check with your provider or use their dual-stack setup.

Is this test accurate?

It runs in your browser. Results reflect your current connection. Corporate networks or VPNs may affect the outcome.

Can I test from a VPN?

Yes. The test uses your active connection, including VPN. Some VPNs support IPv6; many don't.