[dns-operations] /24 Reverse DNS delegation using the IP Address 4th octet?

[Chuck Anderson]

Ok, so I asked for a reverse DNS delegation of a /24.  Let's call it 
"10.1.2.0/24" for the sake of discussion.  I was expecting to get the 
following in their (parent) zone:

2.1.10.in-addr.arpa. 86400	IN	NS	my-master-1.example.com.
2.1.10.in-addr.arpa. 86400	IN	NS	my-master-2.example.com.

Instead, what they gave me was this:

0.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-1.example.com.
0.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-2.example.com.

1.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-1.example.com.
1.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-2.example.com.

2.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-1.example.com.
2.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-2.example.com.

3.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-1.example.com.
3.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-2.example.com.

...

255.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-1.example.com.
255.2.1.10.in-addr.arpa. 86400	IN	NS	my-master-2.example.com.

Is that workable?  It seems silly to me.  Can I still just set up a 
single zone file like so?

$TTL 86400
$ORIGIN 2.1.10.in-addr.arpa.
@       IN      SOA     my-master-1.example.com. hostmaster.example.com. ( 7 3600 600 3600000 86400 )

@	IN	NS	my-master-1.example.com.
	IN	NS	my-master-2.example.com.

0	IN	A	zero.example.com.
1	IN	A	one.example.com.
2	IN	A	two.example.com.
...

etc.

My gut feeling is that this isn't going to work and that they really 
need to delegate 2.1.10.in-addr.arpa directly, correct?

-- 
- Chuck (366 Days until IPv4 depletion: http://ipv4depletion.com/)