[83504] in North American Network Operators' Group
Re: Fixing .com DNS glue records - who to contact?
daemon@ATHENA.MIT.EDU (Todd Vierling)
Wed Aug 17 04:53:40 2005
Date: Wed, 17 Aug 2005 04:53:09 -0400 (Eastern Daylight Time)
From: Todd Vierling <tv@duh.org>
To: Jim Popovitch <jimpop@yahoo.com>
Cc: Matthew Elvey <matthew@elvey.com>, nanog@merit.edu
In-Reply-To: <1124227681.32702.11.camel@localhost>
Errors-To: owner-nanog@merit.edu
On Tue, 16 Aug 2005, Jim Popovitch wrote:
> $host 64.164.28.194
> 194.28.164.64.in-addr.arpa is an alias for \
> 194.192.28.164.64.in-addr.arpa.
> 194.192.28.164.64.in-addr.arpa domain name pointer ns.nextbus.com.
>
> Is "194.192.28.164.64.in-addr.arpa" valid?
Should be -- this is standard practice for rDNS delegation when the rDNS
responsible entity is not using an even octet-bounded network (/8, /16, or
/24). In this case, it indicates a subnet of /27 or /26 (as the network
boundary *seems* to be .192, though that's just thanks to the naming
convention used by the upstream, and the customer in question has .200 as
well).
--
-- Todd Vierling <tv@duh.org> <tv@pobox.com> <todd@vierling.name>
