ksle.kr.		30 IN SOA ns.kornet.net. domain.ns.kornet.net. (
				2021071700 ; serial
				43200      ; refresh (12 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				43200      ; minimum (12 hours)
				)

ksle.kr.		30 IN A	211.221.237.99

Name servers:
ksle.kr.		30 IN NS ns.kornet.net.
ksle.kr.		30 IN NS ns2.kornet.net.