Help with Bind config syntax for reverse DNS on subnet

[Rob]

Hi, was hoping someone could help me with the correct syntax in my named.conf for reverse DNS on a small subnet.

Say I have 10.0.0.0/27, such that actual addresses are 10.0.0.0 through 10.0.0.31  -- If I add a zone like:
zone "0.0.10.in-addr.arpa" {
        type master;
        file "master/0.0.10.in-addr.arpa";  };

...I can define addresses for my little block, but reverse lookups on the rest of 10.0.0.x seem to fail.  What's the correct way to configure Bind for this?

  -Thanks,  RW