Question

17NAS IPv6 Test — free online IPv6 connection test

Not sure if your network really supports IPv6? This free tool checks it in real time, right in your browser.

What it shows:

• Your IPv4 and IPv6 addresses side by side
• Connection latency for each protocol
• ISP information
• Dual-stack status and a connection quality score

It runs both protocols in parallel, so you get the full picture in seconds. There's also a simple curl-based API if you want to script the check.

No sign-up, no uploads — everything runs locally in your browser.

Try it: https://17nas.com/ipv6-test.php

Built by the 17NAS team. Feedback welcome!