Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc.rua@257.cz

Registro IPv4
host: 257.cz
class: IN
ttl: 300
type: A
ip: 37.205.13.38

Servidores DNS Principal (mname) y Secundario (rname)
host: 257.cz
class: IN
ttl: 1800
type: SOA
mname: ns1.shy.cz
rname: root.shy.cz
serial: 2021031111
refresh: 28800
retry: 7200
expire: 2419200
minimum-ttl: 28800

Servidor de Correo
host: 257.cz
class: IN
ttl: 14400
type: MX
pri: 10
target: mail.shy.cz

Información TXT
host: 257.cz
class: IN
ttl: 300
type: TXT
txt: google-site-verification=B2jXH3sfzArrYqOrZBupgE5xLjc-Uxz3Zd2fuHp8ZPE
entries: Array

Información TXT
host: 257.cz
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.shy.cz include:_spf.google.com ~all
entries: Array

Registro IPv6
host: 257.cz
class: IN
ttl: 300
type: AAAA
ipv6: 2a03:3b40:fe:2cd::1