reverse delegation from Telco

[Fajar A. Nugraha]

On Fri, Nov 4, 2011 at 1:11 PM, Jim Pazarena <bind at paz.bz> wrote:
> but that non-auth kinda bugs me, because for my 'full' /24 subnets,
> that never happens. And it's delegated from the same Telco (Telus)

That's because "full" /24 subnets can be delegated easily using
subdomains, while a /28 needs classless delegation
(http://www.ietf.org/rfc/rfc2317.txt), which requires the use of
CNAMES.

As Chris said, your nameserver is NOT authoritave for the PTR record
(85.147.34.207.in-addr.arpa, which is a CNAME to
85.80-95.147.34.207.in-addr.arpa), but it IS authorized for the PTR
record 85.80-95.147.34.207.in-addr.arpa.

-- 
Fajar