Registro DMARC
v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com; fo=1

Registro IPv4
host: ath.cx
class: IN
ttl: 300
type: A
ip: 168.138.216.227

Servidores DNS Principal (mname) y Secundario (rname)
host: ath.cx
class: IN
ttl: 600
type: SOA
mname: ns1.dyndns.org
rname: hostmaster.dyndns.org
serial: 2570990057
refresh: 600
retry: 300
expire: 604800
minimum-ttl: 600