Servidores DNS Principal (mname) y Secundario (rname)
host: song-yang.net
class: IN
ttl: 21600
type: SOA
mname: ns1.hosting.co.kr
rname: admin.song-yang.net
serial: 34
refresh: 21600
retry: 1800
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: song-yang.net
class: IN
ttl: 180
type: MX
pri: 10
target: gunza.duckdns.org

Información TXT
host: song-yang.net
class: IN
ttl: 180
type: TXT
txt: v=spf1 a:mail.song-yang.net ip4:192.168.0.110 include:_spf.google.com ~all
entries: Array