mdsd.kr.		30 IN SOA ns3.hostcenter.co.kr. root.mdsd.kr. (
				2012101416 ; serial
				21600      ; refresh (6 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

mdsd.kr.		30 IN A	1.252.229.150

Mail exchangers:
mdsd.kr.		30 IN MX 10 1.252.229.150.
mdsd.kr.		30 IN MX 10 mail.mdsd.kr.
mdsd.kr.		30 IN MX 10 mdsd.kr.

Name servers:
mdsd.kr.		30 IN NS ns3.hostcenter.co.kr.
mdsd.kr.		30 IN NS ns4.hostcenter.co.kr.