Registro DMARC
v=spf1 a:dns.cna-training.info ~all

Registro IPv4
host: cna-training.info
class: IN
ttl: 3600
type: A
ip: 199.21.150.142

Servidores DNS Principal (mname) y Secundario (rname)
host: cna-training.info
class: IN
ttl: 3600
type: SOA
mname: ns-1652.awsdns-14.co.uk
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: cna-training.info
class: IN
ttl: 3600
type: MX
pri: 0
target: mx.cna-training.info

Información TXT
host: cna-training.info
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a:dns.cna-training.info ~all
entries: Array