@ IN SOA zotac0 hostmaster ( 304 ; serial 1H ; refresh 4H ; retry 3W ; expire 1D ) ; minimum NS zotac0 localhost A 127.0.0.1 zotac0 A 10.20.0.1 zotac1 A 10.20.0.101 zotac2 A 10.20.0.102 zotac3 A 10.20.0.103 zotac4 A 10.20.0.104