$TTL 1D
@       IN SOA  au-team.irpo. root.au-team.irpo. (
                                        1       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
        IN      NS      au-team.irpo.
1       IN      PTR     hq-rtr.au-team.irpo.
2       IN      PTR     hq-cli.au-team.irpo.