1min-example. 0 IN SOA ns root ( 2 2000082401 ; serial 3 1800 ; refresh (30 minutes) 4 1800 ; retry (30 minutes) 5 1814400 ; expire (3 weeks) 6 0 ; minimum (0 seconds) 7 ) 8min-example. 0 IN NS ns.min-example. 9ns.min-example. 0 IN A 10.53.0.1 10