Just noticed (via @henet on twitter) that xkcd.com is now sporting an AAAA record:
$ dig aaaa xkcd.com
; <<>> DiG 9.7.0-P1 <<>> aaaa xkcd.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28275 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;xkcd.com. IN AAAA ;; ANSWER SECTION: xkcd.com. 270 IN AAAA 2001:48c8:1:d:0:23:5482:d026 ;; Query time: 636 msec ;; SERVER: 64.59.135.143#53(64.59.135.143) ;; WHEN: Fri Feb 25 06:33:11 2011 ;; MSG SIZE rcvd: 54
The best part is that it doesn’t seem to be a tunnel, and xkcd’s host (Voxel) is running true native dual stack:
$ traceroute xkcd.com -f 7
traceroute to xkcd.com (72.26.203.99), 30 hops max, 60 byte packets
7 equinix-ix.ord1.us.voxel.net (206.223.119.107) 43.713 ms 47.946 ms 52.495 ms
8 910.te4-3.tsr1.lga3.us.voxel.net (208.122.44.133) 70.260 ms 70.248 ms 70.456 ms
9 0.ae59.tsr1.lga5.us.voxel.net (208.122.44.202) 71.796 ms 69.963 ms 69.826 ms
10 0.ae57.csr2.lga6.us.voxel.net (208.122.44.210) 69.970 ms 71.774 ms 71.762 ms
11 72.26.203.99 (72.26.203.99) 71.628 ms 69.762 ms 69.435 ms
$ traceroute6 xkcd.com -f 4
traceroute to xkcd.com (2001:48c8:1:d:0:23:5482:d026), 30 hops max, 80 byte packets
4 equinix-ix.sjc1.us.v6.voxel.net (2001:504:0:1:0:2:9791:1) 51.188 ms 58.107 ms 60.402 ms
5 ve16.tsr2.iad1.us.voxel.net (2001:48c8::801) 146.855 ms 146.911 ms 146.821 ms
6 0.te6-2.tsr1.ewr1.us.voxel.net (2001:48c8::811) 137.073 ms 137.044 ms 137.029 ms
7 0.te1-4.tsr1.lga5.us.voxel.net (2001:48c8::819) 135.758 ms 136.719 ms 135.739 ms
8 0.ae2.csr2.lga6.us.voxel.net (2001:48c8::82e) 136.702 ms 139.450 ms 139.429 ms
9 2001:48c8:1:d:0:23:5482:d026 (2001:48c8:1:d:0:23:5482:d026) 139.242 ms 121.606 ms 126.777 ms
Welcome to the IPv6 fold xkcd!