Registro IPv4
host: feri.kr
class: IN
ttl: 90
type: A
ip: 121.78.91.40

Servidores DNS Principal (mname) y Secundario (rname)
host: feri.kr
class: IN
ttl: 3600
type: SOA
mname: feri.kr
rname: webmaster.feri.kr
serial: 2019092002
refresh: 600
retry: 300
expire: 3600
minimum-ttl: 60