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

Registro IPv4
host: marathon.com
class: IN
ttl: 300
type: A
ip: 138.32.33.225

Servidores DNS Principal (mname) y Secundario (rname)
host: marathon.com
class: IN
ttl: 3600
type: SOA
mname: dns1.cscdns.net
rname: hostmaster.cscdns.net
serial: 2025111106
refresh: 3600
retry: 600
expire: 604800
minimum-ttl: 3600