17 Aug
2005
17 Aug
'05
4:53 a.m.
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>