How to Test IPv6 Connectivity

This guide covers multiple ways to test whether your network supports IPv6 connectivity.

Method 1: Online Test (Easiest)

Visit IP Lookup. The page automatically tests your IPv6 connectivity and displays your IPv6 address if available. No setup required.

Method 2: Command Line

Windows

Open Command Prompt (cmd) and run:

Or check your assigned IPv6 address:

macOS / Linux

Open Terminal and run:

Or check your interfaces:

Linux (alternative)

Or test with curl:

Method 3: Browser Test

Visit https://ip6.iohow.com/ directly in your browser. If you see an IP address, your browser can reach IPv6 servers. If the page fails to load, your network does not support IPv6.

Troubleshooting

• IPv6 test fails but your ISP supports it: Check your router settings. IPv6 may be disabled in the router admin panel.
• Windows shows "No Internet access" for IPv6: Try running netsh int ipv6 reset as Administrator.
• macOS/Linux can't get IPv6: Check if your router's DHCPv6 or SLAAC is enabled.
• Mobile networks: Most 4G/5G carriers provide IPv6 automatically. If not, check your APN settings.