Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarc@jon.cz;

Registro IPv4
host: jon.cz
class: IN
ttl: 3600
type: A
ip: 188.75.128.90

Servidores DNS Principal (mname) y Secundario (rname)
host: jon.cz
class: IN
ttl: 2560
type: SOA
mname: ns1.websupport.cz
rname: admin.websupport.cz
serial: 1789122701
refresh: 7200
retry: 2048
expire: 1048576
minimum-ttl: 2560

Servidor de Correo
host: jon.cz
class: IN
ttl: 3600
type: MX
pri: 50
target: mx.jon.cz

Información TXT
host: jon.cz
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=FwlUy7dAemqH4RJzgrzPGETcEptHuEzz25v2vHX9tUo
entries: Array

Información TXT
host: jon.cz
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a mx ip4:188.75.128.0/18 include:spf.protection.outlook.com ~all
entries: Array