Registro IPv4
host: isotousb.com
class: IN
ttl: 1799
type: A
ip: 209.74.64.53

Servidores DNS Principal (mname) y Secundario (rname)
host: isotousb.com
class: IN
ttl: 651
type: SOA
mname: dns1.registrar-servers.com
rname: hostmaster.registrar-servers.com
serial: 1739087529
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3601