pknu.ac.kr.		21599 IN SOA ns.pknu.ac.kr. please_set_email.absolutely.nowhere. (
				2015033512 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				2419200    ; expire (4 weeks)
				900        ; minimum (15 minutes)
				)

pknu.ac.kr.		21599 IN TXT "v=spf1 ip4:203.250.126.20 ip4:203.250.124.250
ip4:203.250.126.21 ip4:203.250.124.251 ~all"

pknu.ac.kr.		21599 IN A 203.250.126.211

Mail exchangers:
pknu.ac.kr.		21599 IN MX 10 smf.pknu.ac.kr.

Name servers:
pknu.ac.kr.		21599 IN NS pine.pknu.ac.kr.
pknu.ac.kr.		21599 IN NS ns.pknu.ac.kr.