Registro IPv4
host: postechinc.co.kr
class: IN
ttl: 10664
type: A
ip: 121.78.246.66

Servidores DNS Principal (mname) y Secundario (rname)
host: postechinc.co.kr
class: IN
ttl: 10665
type: SOA
mname: ns1.rootnet.kr
rname: dnsadmin.rootnet.kr
serial: 2016010510
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 10800

Servidor de Correo
host: postechinc.co.kr
class: IN
ttl: 10666
type: MX
pri: 0
target: mail.postechinc.co.kr

Información TXT
host: postechinc.co.kr
class: IN
ttl: 10666
type: TXT
txt: v=spf1 ip4:121.78.246.61 ip4:121.78.246.66 ~all
entries: Array