Registro IPv4
host: costsi.com
class: IN
ttl: 400
type: A
ip: 1.234.59.93

Servidores DNS Principal (mname) y Secundario (rname)
host: costsi.com
class: IN
ttl: 400
type: SOA
mname: ns.costsi.com
rname: root.costsi.com
serial: 0
refresh: 10800
retry: 900
expire: 604800
minimum-ttl: 86400