now for the reverse dns

$TTL 1d ;
$ORIGIN 0.168.192.IN-ADDR.ARPA.
@       IN      SOA     dns.richardriley.net.   richardriley.net. (
                                       2007011501
                                       7200
                                       120
                                       2419200
                                       604800
)
        IN      NS      dns.richardriley.net.
101     IN      PTR     hermes.richardriley.net.
102     IN      PTR     x30.richardriley.net.
104     IN      PTR     development.richardriley.net.