Somewhat Important news: .no registry operator NORID now allows IPv6 glue on NS records in the .no zone.
Regulations for .no was updated July 2nd 2009, see norid.no (in norwegian). These new rules allow for experimental IPv6 on name servers. All .no registrars can in theory support adding AAAA records, as the procedure for now is a simple email from the registrar to the registry.
Of course, this is probably not of great practical importance – only very adventurous (and lonely) people run their DNS resolvers on IPv6 only. On the longer term, however, this will be a possibility – if (when) all the different top level domains add this functionality.
Update: Local student society Samfundet has had this added now.
lkarsten@jungel:~$ dig samfundet.no ns @z.nic.no
; <<>> DiG 9.5.1-P2 <<>> samfundet.no ns @z.nic.no
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41835
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 3, ADDITIONAL: 4
;; WARNING: recursion requested but not available;; QUESTION SECTION:
;samfundet.no. IN NS;; AUTHORITY SECTION:
samfundet.no. 86400 IN NS cirkus.samfundet.no.
samfundet.no. 86400 IN NS ns1.ntnu.no.
samfundet.no. 86400 IN NS ns2.ntnu.no.;; ADDITIONAL SECTION:
ns1.ntnu.no. 86400 IN A 129.241.0.208
ns2.ntnu.no. 86400 IN A 129.241.0.209
cirkus.samfundet.no. 86400 IN A 129.241.93.17
cirkus.samfundet.no. 86400 IN AAAA 2001:700:300:1800::1917;; Query time: 3 msec
;; SERVER: 2001:700:0:52d:158:38:8:133#53(2001:700:0:52d:158:38:8:133)
;; WHEN: Tue Jul 14 10:04:00 2009
;; MSG SIZE rcvd: 168lkarsten@jungel:~$
