Registro IPv4
host: sfclass.tw
class: IN
ttl: 14400
type: A
ip: 144.48.140.23

Servidores DNS Principal (mname) y Secundario (rname)
host: sfclass.tw
class: IN
ttl: 86400
type: SOA
mname: sky.sugardns.net
rname: monitor.sugarhosts.com
serial: 2023122700
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: sfclass.tw
class: IN
ttl: 14400
type: MX
pri: 0
target: sfclass.tw