elent.co.kr.		30 IN SOA ns.nskorea.net. server.jungbo.net. (
				2022000000 ; serial
				28800      ; refresh (8 hours)
				86400      ; retry (1 day)
				3600000    ; expire (5 weeks 6 days 16 hours)
				86400      ; minimum (1 day)
				)

elent.co.kr.		30 IN TXT "v=spf1 include:_spf.ymail.net ~all"

elent.co.kr.		30 IN A	222.231.2.40

Mail exchangers:
elent.co.kr.		30 IN MX 1 anti-spam.ymail.net.

Name servers:
elent.co.kr.		30 IN NS ns2.nskorea.net.
elent.co.kr.		30 IN NS ns3.nskorea.net.
elent.co.kr.		30 IN NS ns.nskorea.net.