Fixing .com DNS glue records - who to contact?
Todd Vierling
tv at duh.org
Wed Aug 17 08:53:09 UTC 2005
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 at duh.org> <tv at pobox.com> <todd at vierling.name>
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