Registro DMARC
v=DMARC1; p=quarantine

Registro IPv4
host: ceo.ch
class: IN
ttl: 3600
type: A
ip: 54.37.94.192

Servidores DNS Principal (mname) y Secundario (rname)
host: ceo.ch
class: IN
ttl: 86400
type: SOA
mname: ns1.nicns.net
rname: hostmaster.nicmanager.com
serial: 1787427964
refresh: 14400
retry: 1800
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: ceo.ch
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.protonmail.ch

Servidor de Correo
host: ceo.ch
class: IN
ttl: 3600
type: MX
pri: 20
target: mailsec.protonmail.ch

Información TXT
host: ceo.ch
class: IN
ttl: 3600
type: TXT
txt: protonmail-verification=33f4feacc8d14c3594dc052d92b4744f5d586f99
entries: Array

Información TXT
host: ceo.ch
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:_spf.protonmail.ch ~all
entries: Array