@       300     IN      SOA     ns1.matrix.net.   admin.matrix.net. (
                        2010021801 ; serial
                        43200 ; refresh - 12 hours
                        3600  ; retry - 1 hour
                        259200 ; expire - 3 days
                        300 ; default_ttl - 5 minutes
                        )
                IN      NS      ns1.matrix.net.
                IN      NS      ns2.matrix.net.
                IN      A       163.234.353.453
                IN      MX      10      mail.matrix.net.
ns1             IN      A       163.234.353.453
ns2             IN      A       163.234.354.453
mail            IN      A       163.234.353.453