Registro IPv4
host: yunshangdian.com
class: IN
ttl: 120
type: A
ip: 127.0.0.1

Servidores DNS Principal (mname) y Secundario (rname)
host: yunshangdian.com
class: IN
ttl: 90
type: SOA
mname: ns1.sinacloud.com
rname: domain.sinacloud.com
serial: 1736542185
refresh: 10800
retry: 900
expire: 604800
minimum-ttl: 86400