IPv6 connectivity test
Does your connection support IPv6? Your browser tries to reach an IPv4-only and an IPv6-only host; whichever answers tells us which protocols you can actually use. You reached this page over IPv4.
Testing your connection…
- IPv4
- Testing…
- IPv6
- Testing…
Do I need IPv6?
IPv6 is the current generation of IP addressing, created because the older IPv4 system is running out of addresses. Most modern networks run dual-stack — both protocols at once — and pick whichever works for each connection. If the test above shows an IPv6 address, you're already using it where sites support it.
Not having IPv6 is rarely a problem today: IPv4 still works everywhere thanks to address sharing (NAT and carrier-grade NAT). But IPv6 can mean more direct connections and is increasingly the default on mobile networks. Whether you have it depends on your ISP and router.
Curious about the difference? Read IPv4 vs IPv6, or what an IP address is.