$ORIGIN sXX-zone.cis.k7dxs.net. @ 300 IN SOA sXX.cis.k7dxs.net. admin.k7dxs.net. ( 1 ; serial 300 ; refresh 300 ; retry 300 ; expire 300 ; minimum ) ; Nameservers @ 300 IN NS sXX.cis.k7dxs.net. ; Test record @ 300 IN TXT "sXX-zone test record"