[174516] in North American Network Operators' Group
Re: Bare TLD resolutions
daemon@ATHENA.MIT.EDU (John Levine)
Wed Sep 17 16:47:08 2014
X-Original-To: nanog@nanog.org
Date: 17 Sep 2014 20:46:40 -0000
From: "John Levine" <johnl@iecc.com>
To: nanog@nanog.org
In-Reply-To: <18573980.1992.1410970155561.JavaMail.root@benjamin.baylink.com>
Errors-To: nanog-bounces@nanog.org
>The latter would seem to be avoidable by making sure that *DNS resolution
>of bare TLDs always returns NXDOMAIN*.
>
>Is that a requirement for a TLD?
No. In fact, a TLD lookup that returned NXDOMAIN would be utterly
broken since that would mean the TLD had no SOA, no NS, and no
subdomains. Perhaps you're confusing it with NOERROR.
>If it isn't, does anyone know of any domains dumb enough to actual
>return something for a lookup on the bare TLD?
Yes. If you'd read RFC 7085, you'd already know which ones do.
There have been A and MX records at TLDs nearly as long as there have
been TLDs.
R's,
John
