example.		IN SOA	mname1. . (
				2          ; serial
				20         ; refresh (20 seconds)
				20         ; retry (20 seconds)
				1814400    ; expire (3 weeks)
				3600       ; minimum (1 hour)
				)
			IN NS	ns.example.
ns			IN A 	10.0.0.1
a			IN A	10.0.0.2