51tooling.net.		600 IN SOA ns1.51dns.com. admin.51dns.com. (
				1502971741 ; serial
				28800      ; refresh (8 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)

51tooling.net.		600 IN A 104.161.22.242