DNS service with 4-digit IPv6 addresses (2a09:: and 2a11::)
The only other example I'm aware of is dns.nic.in with 2409::
https://github.com/dns-sb/DoT#ipv6Open linkView original on sh.itjust.workshttps://github.com/dns-sb/DoT#ipv6Open linkView original on sh.itjust.works
Well quad9 isn't that bad:
Primary DNS: 2620:fe::fe Secondary DNS: 2620:fe::9
That's 75% more digits and 50% more colons.
best I know is 2600::1 and 2600::2
This is very interesting. One of the reasons I like nextdns is because of the relatively short addresses. 2a07:a8c0:: and 2a07:a8c1:: but this is even shorter. I always felt like sprint should've put a DNS service on 2600:: feels like such a waste not to.
If you ever need an easy one to test for E2E IPv6 connectivity then 2600:: works too. Useful to remember.