$TTL    3600
@       IN      SOA     sethi.mos.  root.mos. (
                   2007010401           ; Serial
                         3600           ; Refresh [1h]
                          600           ; Retry   [10m]
                        86400           ; Expire  [1d]
                          600 )         ; Negative Cache TTL [1h]
;
@       IN      NS      sethi.mos.


sethi     IN      A       80.80.0.20 
kheops    IN      A       80.80.0.10
host1    IN      A       80.80.0.1
host2    IN      A       80.80.0.2
host3    IN      A       80.80.0.3
host4    IN      A       80.80.0.4
host5    IN      A       80.80.0.5