Registro IPv4
host: nrbnet.org
class: IN
ttl: 3600
type: A
ip: 94.237.50.248

Servidores DNS Principal (mname) y Secundario (rname)
host: nrbnet.org
class: IN
ttl: 3600
type: SOA
mname: ns1.stackdns.com
rname: hostmaster.stackdns.com
serial: 1560634487
refresh: 1800
retry: 900
expire: 1209600
minimum-ttl: 300

Servidor de Correo
host: nrbnet.org
class: IN
ttl: 3600
type: MX
pri: 10
target: mx.stackmail.com