Registro IPv4
host: 53dns.net
class: IN
ttl: 900
type: A
ip: 121.40.24.223

Servidores DNS Principal (mname) y Secundario (rname)
host: 53dns.net
class: IN
ttl: 600
type: SOA
mname: dns.4cun.com
rname: admin.53dns.net
serial: 1729850383
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 600

Servidor de Correo
host: 53dns.net
class: IN
ttl: 900
type: MX
pri: 10
target: mx01.dm.aliyun.com