$TTL 300	; 5 minutes
@		IN SOA	ns1.example.nil. hostmaster.example.nil. (
				1	   ; serial
				2000       ; refresh (2000 seconds)
				2000       ; retry (2000 seconds)
				1814400    ; expire (3 weeks)
				3600       ; minimum (1 hour)
				)
@		NS	ns1.example.nil.
		NS	ns2.example.nil.