Registro IPv4
host: doggie.com
class: IN
ttl: 90
type: A
ip: 20.125.28.80

Servidores DNS Principal (mname) y Secundario (rname)
host: doggie.com
class: IN
ttl: 90
type: SOA
mname: ns1.dnx.com
rname: hostmaster.dnx.com
serial: 2025091901
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600