Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc@elmundo.com; fo=1

Registro IPv4
host: elmundo.com
class: IN
ttl: 3600
type: A
ip: 131.0.136.66

Servidores DNS Principal (mname) y Secundario (rname)
host: elmundo.com
class: IN
ttl: 3600
type: SOA
mname: dws00.dwsistemas.net
rname: hostmaster.datawareltda.com
serial: 2004010496
refresh: 3600
retry: 600
expire: 21600
minimum-ttl: 3600

Servidor de Correo
host: elmundo.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.elmundo.com

Información TXT
host: elmundo.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:131.0.136.66 mx:mail.elmundo.com ~all
entries: Array