GoDaddy DNS broken IPv6 Resolvability / Note on akam.net NS sets

[Tobias Fiebig]

Moin,
throwing this here on the list, as it might drift by someone who finds
this useful and/or can do something about it.

During some measurements recently, a couple of colleagues and I noticed
that for some reason a lot of domains in specific TLDs (.it/.fr (nearly
all), .de (~half), couple of other TLDs) related to hosting by GoDaddy
(domaincontrol.com) are not IPv6 resolvable.

We found that a bit odd, as we had previously seen that GoDaddy had
fixed DNS resolvability for the domains they host back in 2017, when
they added missing AAAA glue for domaincontrol.com [1].

Taking a closer look shows that these domains use
ns81.domaincontrol.com. / ns82.domaincontrol.com. as NS, which lack
AAAA records, instead of ns01.domaincontrol.com. /
ns02.domaincontrol.com., which are found in most other GoDaddy hosted
domains.

Somewhat related, as secondaries for domaincontrol.com are now in
akam.net: The delegation NSset and authoritative NSset (and records)
seem to differ. Not a practical issue in most cases, but i'd be really
curious about the reason (if it is intentional and the reason can be
shared; Can imagine sth. CDN related?)

So, does anyone know more about either of these two points or maybe
knows whom to motivate to fix this (well, at least the
domaincontrol.com thing)? ;-) This is a big chunk of names that can be
made v6 ready all at once.

With best regards,
Tobias


[1] https://link.springer.com/chapter/10.1007/978-3-031-28486-1_22



-- 
Dr.-Ing. Tobias Fiebig
T +31 616 80 98 99
M tobias at fiebig.nl