Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: af.com
class: IN
ttl: 8
type: A
ip: 64.99.64.37

Servidores DNS Principal (mname) y Secundario (rname)
host: af.com
class: IN
ttl: 300
type: SOA
mname: ns1.systemdns.com
rname: hostmaster.systemdns.com
serial: 1752231811
refresh: 10800
retry: 3600
expire: 300
minimum-ttl: 60