[dns-operations] An simple observation

[Mark Andrews]

Of the .AU zones in the Alexa top 1M domains there 672 IPv6 DNS servers
for them and 6824 IPv4 servers.

Mark

In message <CAHPuVdUvaPKuDLZKszaUebe+zomejTnmU_P6k0sq03fSNp99bg at mail.gmail.com>
, Shumon Huque writes:
>
> On Wed, Sep 24, 2014 at 9:27 PM, Davey Song <songlinjian at gmail.com> wrote:
>
> > Hi everyone, I‘m recently doing a little survey on the penetration of
> IPv6
> > in DNS system and it's latent problems.
> >
> > I find that top websites like Google, Wikipedia,Yahoo already support
> IPv6
> > access, but its name servers are still IPv4-only. I'm wondering why? is
> > there any operation consideration or risk in their IPv6 deployment?
> >
>
> I've done brief surveys of a small group of well known tech companies (and
> a few other groups) and a little over half of those have at least one IPv6
> reachable authoritative nameserver (28 of 52 or ~ 54%):
>
>     http://www.huque.com/app/dnsstat/category/techcom/
>
> Yes, the new gTLDs do require IPv6, and my survey of that group seems to
> confirm that this is the case in practice:
>
>      http://www.huque.com/app/dnsstat/category/new_gtld/
>
> You might be interested in NIST's larger measurement of over 2000 US
> companies also. They show 77 of 2150 IPv6 reachable DNS domains (only
> 3.6%).
>
>     http://fedv6-deployment.antd.nist.gov/cgi-bin/generate-com
>
> --Shumon
>

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org