cheonan21.or.kr.	30 IN SOA ns1.quvdns.com. hostmaster.quvdns.com. (
				2023042000 ; serial
				21600      ; refresh (6 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

cheonan21.or.kr.	30 IN A	13.124.106.16
cheonan21.or.kr.	30 IN A	13.125.102.36

Name servers:
cheonan21.or.kr.	30 IN NS ns2.quvdns.com.
cheonan21.or.kr.	30 IN NS ns1.quvdns.com.