Registro IPv4
host: bu5.cn
class: IN
ttl: 600
type: A
ip: 103.20.222.179

Servidores DNS Principal (mname) y Secundario (rname)
host: bu5.cn
class: IN
ttl: 600
type: SOA
mname: dns.bizcn.com
rname: dnscont.dns.bizcn.com
serial: 1
refresh: 28800
retry: 14400
expire: 14400
minimum-ttl: 3600

Servidor de Correo
host: bu5.cn
class: IN
ttl: 600
type: MX
pri: 10
target: mxdomain.qq.com