reverse DNS

[Devon Harding - GTHLA]

For some reason, I cannot to a reverse lookup on my IP address on my RH7.2
system.  When I do a 'dig -x 12.x.x.x', I get the following error: ';;
connection timed out; no servers could be reached'

Here are my DNS files:

named.conf

options {
        directory "/var/named";
};
key "rndckey"{
        algorithm "hmac-md5";
        secret "ko3EjjIw+4Tf8BKHZqjq+g==";
};
controls{
        inet 127.0.0.1 allow{
                localhost;
        }       keys{
                "rndckey";
        };
};
zone "." {
        type hint;
        file "named.ca";
};
zone "domain.com" {
        type master;
        file "domain.com";
        notify yes;
};
zone "x.x.12.IN-ADDR.ARPA" {
        type master;
        file "12.x.x";
        notify yes;
};
zone "0.0.127.IN-ADDR.ARPA" {
        type master;
        file "127.0.0";
};

12.x.x:

$TTL    43200
@               IN      SOA     ns1.domain.com.  hostmaster.domain.com. (
                        2002070102 ; serial
                        1H ; refresh
                        15 ; retry
                        14D ; expire
                        12H ; default_ttl
                        )
110             IN      PTR     systems1.domain.com.
65              IN      PTR     netop.domain.com.

-Devon