Update on IPv6-reachable DNS

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At the beginning of 2008, I made a blog post asking how many of the top-level domains (.com, .uk, etc) had authoritative nameservers which were reachable over IPv6. In January, 2008, there were 181 v6-reachable domains.

I re-ran the analysis this afternoon to see how things had changed in four months. Eight more domains are reachable over IPv6. This means that 70% of top-level domains have at least one IPv6-enabled authoritative server.

Here are the additions:

.arpa
.az (Azerbaijan)
.do (Dominican Republic)
.eg (Egypt)
.eu (European Union)
.km (Comoros)
.mk (Macedonia)
.mz (Mozambique)
.sa (Saudi Arabia)
.sz (Swaziland)

Sadly, the .td (Chad) domain servers is no longer reachable over IPv6.

Interestingly, despite the much-discussed US federal IPv6 mandate, the nameservers for .gov and .mil are still not reachable over IPv6.

I also looked at IPv6 DNS in US higher education. At the top level, Educause has still not seen fit to IPv6-enable the .edu servers. In January, 2008, there were only 12 Universities with IPv6-reachable DNS. Four months later, six more US universities have IPv6-enabled their nameservers:

  • Georgia Institute of Technology (new)
  • Indiana University
  • Ohio University (new)
  • Pennsylvania State University
  • Princeton University
  • Portland State University (new)
  • University of California, Berkeley
  • University of California, San Diego
  • University of Delaware
  • University of Illinois at Urbana-Champaign
  • University of Iowa (new)
  • University of Notre Dame
  • University of Oregon
  • University of Pennsylvania
  • University of Rhode Island (new)
  • University of South Florida
  • Wichita State University
  • Worcester Polytechnic Institute (new)
This brings the total to 18 of the 212 University members of Internet2.

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