Registro DMARC
v=DMARC1; p=quarantine

Registro IPv4
host: ceo.ch
class: IN
ttl: 300
type: A
ip: 194.150.248.216

Servidores DNS Principal (mname) y Secundario (rname)
host: ceo.ch
class: IN
ttl: 1800
type: SOA
mname: lloyd.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2361450009
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: ceo.ch
class: IN
ttl: 300
type: MX
pri: 10
target: mail.protonmail.ch

Servidor de Correo
host: ceo.ch
class: IN
ttl: 300
type: MX
pri: 20
target: mailsec.protonmail.ch

Información TXT
host: ceo.ch
class: IN
ttl: 300
type: TXT
txt: google-site-verification=zDRrGCz5uZBO1Udp943Mwj2711Ok2Aov7GWFHTxgeP0
entries: Array

Información TXT
host: ceo.ch
class: IN
ttl: 300
type: TXT
txt: ahrefs-site-verification_a3f3f4ebdd69af91d24a408d8a57b29d48177fdec84266a5ad7b5813e2bdaa54
entries: Array

Información TXT
host: ceo.ch
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.protonmail.ch mx ~all
entries: Array

Información TXT
host: ceo.ch
class: IN
ttl: 300
type: TXT
txt: protonmail-verification=33f4feacc8d14c3594dc052d92b4744f5d586f99
entries: Array