ip6test.net

Is your internet IPv6 ready?

Real-time connectivity tests for IPv4, IPv6, browser preference, and DNS transport.

IPv4 Connectivity

Status
ICMP
Address
Hostname
ISP

IPv6 Connectivity

↺ recheck

Status
ICMP
Address
Hostname
ISP

Browser

↺ recheck

Default
Fallback

DNS Reachability

↺ recheck

Nameserver	via IPv4	via IPv6
NSv4 (IPv4 glue)
NSv6 (IPv6 glue)

What do these tests mean?

IPv4 & IPv6 connectivity

Each test connects to a server reachable only over that protocol. If a protocol shows "Not supported", your ISP or device doesn't provide it.

ICMP ping

Our server attempts to ping your IPv6 address. "Filtered" means inbound ICMP is blocked by your router or ISP — common and usually harmless.

Browser default & fallback

Shows which protocol your browser prefers when both are available (Happy Eyeballs). Fallback measures whether and how quickly it can switch protocols.

DNS reachability

Tests whether your DNS resolver can reach nameservers over both transports. NSv6 + IPv4 unreachable is expected on IPv6-only or certain CGN networks.