Registro DMARC
v=DMARC1; p=none

Registro IPv4
host: 56k.es
class: IN
ttl: 3600
type: A
ip: 217.76.139.178

Servidores DNS Principal (mname) y Secundario (rname)
host: 56k.es
class: IN
ttl: 21600
type: SOA
mname: ns1077.ui-dns.com
rname: hostmaster.1and1.com
serial: 2017012272
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: 56k.es
class: IN
ttl: 3600
type: MX
pri: 20
target: mailsec.protonmail.ch

Servidor de Correo
host: 56k.es
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.protonmail.ch

Información TXT
host: 56k.es
class: IN
ttl: 3600
type: TXT
txt: protonmail-verification=272a299717009aa012ad5b453b4823f268f96585
entries: Array

Información TXT
host: 56k.es
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:_spf.protonmail.ch mx ~all
entries: Array