sewontech.kr. 491 IN A 58.229.240.170 sewontech.kr. 21600 IN NS ns1.ksdom.kr. sewontech.kr. 21600 IN NS ns2.ksdom.kr. sewontech.kr. 21600 IN SOA ns1.ksdom.kr. domain.ksidc.net. ( 2022011020 ; serial 28800 ; refresh (8 hours) 7200 ; retry (2 hours) 604800 ; expire (1 week) 21600 ; minimum (6 hours) )