Registro IPv4
host: 123-bt.cn
class: IN
ttl: 600
type: A
ip: 43.154.64.7

Servidores DNS Principal (mname) y Secundario (rname)
host: 123-bt.cn
class: IN
ttl: 180
type: SOA
mname: f1g1ns1.dnspod.net
rname: freednsadmin.dnspod.com
serial: 1670464134
refresh: 3600
retry: 180
expire: 1209600
minimum-ttl: 180