bookmen.co.kr.		30 IN SOA ns.uni-net.co.kr. root.uni-net.co.kr. (
				2017070003 ; serial
				900        ; refresh (15 minutes)
				600        ; retry (10 minutes)
				86400      ; expire (1 day)
				3600       ; minimum (1 hour)
				)

bookmen.co.kr.		30 IN TXT "v=spf1 ip4:182.252.138.8 ip4:182.252.138.55
ip4:182.252.138.58 ip4:183.111.188.19 ~all"

bookmen.co.kr.		30 IN A	211.39.229.190

Mail exchangers:
bookmen.co.kr.		30 IN MX 10 mail.bookmen.co.kr.

Name servers:
bookmen.co.kr.		30 IN NS dns.uni-net.co.kr.
bookmen.co.kr.		30 IN NS ns.uni-sys.co.kr.
bookmen.co.kr.		30 IN NS ns.uni-net.co.kr.