Reverse look-up - in-addr.arpa delegation - rfc 2317

[Constantin Moldovan]

Hello,

I've read the RFC 2317 three times but I still have problems if I want to
do a reverse delegation for only one IP Address.

I have to set the reverse DNS for 
  209.17.183.233 to gt.antarcti.ca
and to set the reverse DNS for 
  209.17.159.205 to antarcti.ca

Our Name Servers:
   NS1.BROADBAND.NET            207.107.209.130
   NS2.BROADBAND.NET            209.17.128.34

do not provide management for the domain antarctica.ca
so I do not have any information in my DNS db files about antarcti.ca
nor for the 2 IP Addresses 209.17.183.233 and 209.17.159.205.

But the IP Block belongs to us:

->:/# whois -h rs.arin.net 209.17.159
GT Group Telecom Services Corp. (NET-GROUPTELECOM-BLK-1) GROUPTELECOM-BLK-1
                                                 209.17.128.0 -
209.17.191.255
Total Connect Communications Inc. (NETBLK-GT-209-17-159-0) GT-209-17-159-0
                                                 209.17.159.0 -
209.17.159.127
Antarcti.ca Systems Inc. (NETBLK-GT-209-17-159-192) GT-209-17-159-192
                                               209.17.159.192 -
209.17.159.207
Mercator Systems Ltd. (NETBLK-GT-209-17-159-208) GT-209-17-159-208
                                               209.17.159.208 -
209.17.159.223


->:/# whois -h rs.arin.net 209.17.183
GT Group Telecom Services Corp. (NET-GROUPTELECOM-BLK-1) GROUPTELECOM-BLK-1
                                                 209.17.128.0 -
209.17.191.255
Impact Business Solutions Inc. (NETBLK-GT-209-17-183-0) GT-209-17-183-0
                                                 209.17.183.0 -
209.17.183.127
BuildDirect.com (NETBLK-GT-209-17-183-128) GT-209-17-183-128
                                               209.17.183.128 -
209.17.183.191
Schema Software Inc. (NETBLK-GT-209-17-183-192) GT-209-17-183-192
                                               209.17.183.192 -
209.17.183.207
PerCurrence Inc. (NETBLK-GT-209-17-183-208) GT-209-17-183-208
                                               209.17.183.208 -
209.17.183.223

->:/# whois -h rs.arin.net NET-GROUPTELECOM-BLK-1
GT Group Telecom Services Corp. (NET-GROUPTELECOM-BLK-1)
   Netname: GROUPTELECOM-BLK-1
   Netblock: 209.17.128.0 - 209.17.191.255

   Domain System inverse mapping provided by:

   NS1.BROADBAND.NET            207.107.209.130
   NS2.BROADBAND.NET            209.17.128.34

->:/# nslookup
Default Server:  aphrodite.gt.ca
Address:  209.17.128.34

> set type=any

> antarcti.ca
Server:  aphrodite.gt.ca
Address:  209.17.128.34

Non-authoritative answer:
antarcti.ca     nameserver = ns1.cs.ubc.ca
antarcti.ca     nameserver = fs1.ugrad.cs.ubc.ca
antarcti.ca     internet address = 209.17.159.205

Authoritative answers can be found from:
antarcti.ca     nameserver = ns1.cs.ubc.ca
antarcti.ca     nameserver = fs1.ugrad.cs.ubc.ca
ns1.cs.ubc.ca   internet address = 142.103.6.6
fs1.ugrad.cs.ubc.ca     internet address = 198.162.35.1

My problem with RFC 2371 is that I have only 2 IP Addresses.

What I think I should do;

1. add to named.boot:
primary 183.17.209.in-addr.arpa db.209.17.183
primary 159.17.209.in-addr.arpa db.209.17.159

2. edit db.209.17.183 file:

$ORIGIN 17.209.in-addr.arpa.
183             IN      SOA     gt.ca. root.gt.ca. (
                2000081401 5400 900 28800 5400 )
                IN      NS      ns1.gt.ca.
                IN      NS      ns2.gt.ca.
6.6.103.142.in-addr.arpa.     IN      NS      ns1.cs.ubc.ca.
1.35.162.198.in-addr.arpa.    IN      NS      fs1.ugrad.cs.ubc.ca.
gt.antarctica.ca.             IN      A       209.17.183.233
$ORIGIN 183.17.209.in-addr.arpa.
233                           IN CNAME        233.183.17.209.in-addr.arpa.

and edit db.209.17.159 file:

$ORIGIN 17.209.in-addr.arpa.
159             IN      SOA     gt.ca. root.gt.ca. (
                2000081401 5400 900 28800 5400 )
                IN      NS      ns1.gt.ca.
                IN      NS      ns2.gt.ca.
6.6.103.142.in-addr.arpa.     IN      NS      ns1.cs.ubc.ca.
1.35.162.198.in-addr.arpa.    IN      NS      fs1.ugrad.cs.ubc.ca.
antarctica.ca                 IN      A       209.17.159.205
$ORIGIN 159.17.209.in-addr.arpa.
205                           IN CNAME        205.159.17.209.in-addr.arpa.

Is this correct ?
I think I'm still missing something. 

Any help will be appreciated.

Thanks,
Constantin