$TTL 86400               ; Default TTL 24 hours
   @ IN SOA nameserver.example. admin.nameserver.example. (
            2016052400      ; Serial
            7200            ; Refresh ( 7200 = 2 hours)
            3600            ; Retry   ( 3600 = 1 hour)
            15724800        ; Expire  (15724800 = 6 months)
            60              ; Minimum
            )
   @ IN NS  nameserver.example.

   @ IN A    192.0.0.170
   @ IN A    192.0.0.171
   @ IN AAAA 64:ff9b::192.0.0.170 ; If not using Well-Known Prefix
   @ IN AAAA 64:ff9b::192.0.0.171 ; place chosen NAT64 prefix here