Registro CNAME (Alias)
host: sjsummit.co.kr
class: IN
ttl: 1800
type: CNAME
target: kr

Servidores DNS Principal (mname) y Secundario (rname)
host: kr
class: IN
ttl: 152
type: SOA
mname: g.dns.kr
rname: domain-manager.nic.or.kr
serial: 2606300569
refresh: 3600
retry: 900
expire: 604800
minimum-ttl: 900

Registro CNAME (Alias)
host: sjsummit.co.kr
class: IN
ttl: 1799
type: CNAME
target: kr