ubc.co.kr.		30 IN SOA ubc.co.kr. webmaster. (
				20231214   ; serial
				43200      ; refresh (12 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)

ubc.co.kr.		30 IN TXT "v=spf1 ip4:210.123.162.42 ~all"

ubc.co.kr.		30 IN A	210.123.162.44

Mail exchangers:
ubc.co.kr.		30 IN MX 3 spamout.ubc.co.kr.
ubc.co.kr.		30 IN MX 5 spam.ubc.co.kr.
ubc.co.kr.		30 IN MX 20 mail.ubc.co.kr.

Name servers:
ubc.co.kr.		30 IN NS ns.ubc.co.kr.