What Is an IPv6 Address?
IPv6 is the newer version of the Internet Protocol, designed to replace IPv4 as its address space runs out. IPv6 addresses are longer (e.g., 2001:0db8::7334) and can support virtually unlimited devices. Many ISPs now assign IPv6 by default.
Unlike IPv4, IPv6 addresses are often assigned directly to individual devices rather than shared across a network. This makes them more precise — but also more revealing from a privacy standpoint. You can check both addresses using our IP address tool.
What This IPv6 Checker Shows
- Your IPv6 address (if available)
- Fallback IPv4 detection
- IPv6 availability status on your connection
IPv4 vs IPv6
| Feature | IPv4 | IPv6 |
|---|---|---|
| Format | 192.168.1.1 | 2001:0db8::7334 |
| Address space | ~4.3 billion | Virtually unlimited |
| Security | IPSec optional | IPSec built-in |
| NAT required | Yes (common) | No |
IPv6 Leak Test
If you're using a VPN, your IPv6 address may still be visible even if your IPv4 is hidden. This is called an IPv6 leak.
If you see your real IPv6 address above while connected to a VPN, your connection is leaking. To fix this, disable IPv6 in your device settings or use a VPN that supports IPv6 tunneling.
Why Checking Your IPv6 Address Matters
Testing your IPv6 status helps you verify your privacy setup and catch potential leaks before they expose you. Many VPNs only handle IPv4, which means your real IPv6 address could reveal your actual location.
Privacy Note
IPv6 addresses can be more persistent and device-specific than IPv4, making them potentially easier to track. This tool shows what's visible to websites. We don't store, track, or log any of your data.