ORIGIN
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...
$
ORIGIN 2.0.192.in-addr.arpa.
;
1 PTR host1.A.
domain ...
...
CNAME 195.192/26.2.0.192.in-addr.arpa.
$
ORIGIN 0/25.2.0.192.in-addr.arpa.
@
IN SOA ns.A.
domain ...
...
$
ORIGIN 2.0.192.in-addr.arpa.
129
CNAME 129.128/26.2.0.192.in-addr.arpa.
...
...
$
ORIGIN 2.0.192.in-addr.arpa.
129
CNAME 129.128/26
...