Registro IPv4
host: polar-block.com
class: IN
ttl: 600
type: A
ip: 64.91.238.24

Servidores DNS Principal (mname) y Secundario (rname)
host: polar-block.com
class: IN
ttl: 3600
type: SOA
mname: ns09.domaincontrol.com
rname: dns.jomax.net
serial: 2018112900
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: polar-block.com
class: IN
ttl: 3600
type: MX
pri: 10
target: polar-block.com