Registro DMARC
v=DMARC1; p=reject; aspf=s

Registro IPv4
host: covid19.com
class: IN
ttl: 21600
type: A
ip: 216.239.138.50

Servidores DNS Principal (mname) y Secundario (rname)
host: covid19.com
class: IN
ttl: 21600
type: SOA
mname: primary.guardeddns.net
rname: dns-admin.guardeddns.net
serial: 178
refresh: 28800
retry: 450
expire: 1209600
minimum-ttl: 900

Servidor de Correo
host: covid19.com
class: IN
ttl: 21600
type: MX
pri: 10
target: postoffice.guardedhost.com

Información TXT
host: covid19.com
class: IN
ttl: 21600
type: TXT
txt: v=spf1 include:spf.guardedhost.com -all
entries: Array