Registro DMARC
v=spf -all

Registro IPv4
host: us.com
class: IN
ttl: 3600
type: A
ip: 54.153.56.183

Servidores DNS Principal (mname) y Secundario (rname)
host: us.com
class: IN
ttl: 3600
type: SOA
mname: ns0.centralnic.net
rname: hostmaster.centralnic.net
serial: 3000580972
refresh: 900
retry: 1800
expire: 6048000
minimum-ttl: 3600

Servidor de Correo
host: us.com
class: IN
ttl: 60
type: MX
pri: 0
target: mx-01.emailme.com

Información TXT
host: us.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 mx -all
entries: Array