There are several well known IPv4 addresses on the Internet that people widely use for testing their internet connectivity - 4.2.2.2, 8.8.8.8, 8.8.4.4, 1.1.1.1, etc. But what about IPv6? Does anybody know any easy to remember publicly pingable IPv6 addresses?
I think Sprint has one of the shortest:
$ ping6 2600::
PING6(56=40+8+8 bytes) 2a00:8640:1::357b:4afd:7201:61cd --> 2600::
16 bytes from 2600::, icmp_seq=0 hlim=47 time=136.297 ms
16 bytes from 2600::, icmp_seq=1 hlim=47 time=134.229 ms
16 bytes from 2600::, icmp_seq=2 hlim=47 time=134.438 ms
16 bytes from 2600::, icmp_seq=3 hlim=47 time=135.200 ms
16 bytes from 2600::, icmp_seq=4 hlim=47 time=133.569 ms