macstudio.co.kr. 1800 IN A 116.120.58.57 macstudio.co.kr. 1800 IN NS cns2.simplexi.com. macstudio.co.kr. 1800 IN NS cns1.simplexi.com. macstudio.co.kr. 1800 IN SOA macstudio.co.kr. postmaster.macstudio.co.kr. ( 20190401 ; serial 10800 ; refresh (3 hours) 3600 ; retry (1 hour) 3600000 ; expire (5 weeks 6 days 16 hours) 43200 ; minimum (12 hours) ) macstudio.co.kr. 1800 IN MX 10 macstudio.co.kr. macstudio.co.kr. 1800 IN TXT "v=spf1 ip4:116.120.58.57 ~all"