Registro IPv4
host: doctorm.kr
class: IN
ttl: 180
type: A
ip: 1.234.23.116

Servidores DNS Principal (mname) y Secundario (rname)
host: doctorm.kr
class: IN
ttl: 180
type: SOA
mname: ns1.hosting.co.kr
rname: admin.doctorm.kr
serial: 11
refresh: 21600
retry: 1800
expire: 1209600
minimum-ttl: 180