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Old 20th August 2009, 05:16
bluejay3 bluejay3 is offline
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Default Another zone may be required

I believe you need another reverse DNS zone for the whole subnet, 1.168.192.in-addr.arpa.
In this zone, add NS records:
NS 1-30 ns1.yourserver.com.
NS 1-30 ns2.yourserver.com.
and a CNAM for each record you have control over, pointing to your 1-30.1.168.192 zone:
CNAME 1 1.1-30 (no trailingperiods, the full zone name is appended)
CNAME 2 2.1-30
....
CNAME 30 30.1-30

Therefore, given a lookup for 192.168.1.5, it will look for 5.1.168.192... which returns 5.1-30 (no period, so really equal to 5.1-30.1.168.192.in-addr.arpa) which will then look in your 1-30.1.168.192... zone and find the PTR record for 5.

Note the 1-30 zone prefix is arbitrary and can be anything really, but it helps with identication.
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