Registro IPv4
host: simpinv.com
class: IN
ttl: 7200
type: A
ip: 66.81.203.198

Servidores DNS Principal (mname) y Secundario (rname)
host: simpinv.com
class: IN
ttl: 7200
type: SOA
mname: ns1.bluehost.com
rname: root.bluehost.com
serial: 124091007
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 300