$TTL 3D
1.168.192.in-addr.arpa.              IN      SOA     intranet.fildo.net. hostmaster.intranet.fildo.net. (
                                2006081607       ; serial, todays date + todays serial
                                28800   ; Refresh
                                7200    ; Retry
                                604800  ; Expire
                                86400)  ; Minimum TTL

;
                        NS      intranet.fildo.net.


200     PTR     intranet.fildo.net.
223     PTR     hilltop.intranet.fildo.net.
222     PTR     cloud9.intranet.fildo.net.
220     PTR     remtrade.intranet.fildo.net.
230     PTR     proxy.intranet.fildo.net.
4       PTR     liberty.intenet.fildo.net.