gunsan.ac.kr.		30 IN SOA dns.gunsan.ac.kr. namu.kunsan.ac.kr. (
				2015047390 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				600        ; minimum (10 minutes)
				)

gunsan.ac.kr.		30 IN TXT "v=spf1 ip4:202.30.55.51 ip4:202.30.55.50 ip4:202.30.55.20
ip4:202.30.55.81 ip4:203.234.59.28 -all"

gunsan.ac.kr.		30 IN A	175.106.84.220

Mail exchangers:
gunsan.ac.kr.		30 IN MX 5 spam.gunsan.ac.kr.
gunsan.ac.kr.		30 IN MX 10 mail.gunsan.ac.kr.

Name servers:
gunsan.ac.kr.		30 IN NS dns.gunsan.ac.kr.
gunsan.ac.kr.		30 IN NS ns2.gunsan.ac.kr.