ff00ff.kr.		30 IN SOA ns3.hostcenter.co.kr. root.ff00ff.kr. (
				2017070920 ; serial
				21600      ; refresh (6 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

ff00ff.kr.		30 IN TXT "v=spf1 include:example.spf.com include:_spf.dooray.com
~all"

ff00ff.kr.		30 IN A	23.236.62.147

Mail exchangers:
ff00ff.kr.		30 IN MX 1 aspmx1.dooray.com.

Name servers:
ff00ff.kr.		30 IN NS ns3.hostcenter.co.kr.
ff00ff.kr.		30 IN NS ns4.hostcenter.co.kr.