Registro IPv4
host: ycsteel.kr
class: IN
ttl: 1800
type: A
ip: 203.245.29.27

Servidores DNS Principal (mname) y Secundario (rname)
host: ycsteel.kr
class: IN
ttl: 1800
type: SOA
mname: ycsteel.kr
rname: postmaster.ycsteel.kr
serial: 20200317
refresh: 10800
retry: 3600
expire: 3600000
minimum-ttl: 43200