Robtex

Up: 204.246.160.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 204.246.160.0/24
Down right: 204.246.161.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.246.160.5	PTR	ns-941.amazon.com
204.246.160.7	PTR	ns-942.amazon.com
204.246.160.131	A	elasticloadbalancing.us-west-1.amazonaws.com
204.246.160.159	PTR	cloudsearch.us-west-1.amazonaws.com
204.246.160.160	PTR	callback.cloudsearch.us-west-1.amazonaws.com
204.246.160.184	A	countryarchitect.com
204.246.160.187	PTR	anon-cp.storagegateway.us-west-1.amazonaws.com
204.246.160.188	PTR	dp-1.storagegateway.us-west-1.amazonaws.com
204.246.160.190	PTR	proxy-app.storagegateway.us-west-1.amazonaws.com
204.246.160.224	PTR	s3-us-west-1.amazonaws.com
204.246.160.225	PTR	s3-us-west-1-w.amazonaws.com
204.246.160.226	A+PTR	s3-console-us-west-1.console.aws.amazon.com
204.246.160.227	A+PTR	s3-console-us-west-1.amazonaws.com
204.246.160.230	PTR	s3-website-us-west-1.amazonaws.com
204.246.160.230	A	*.s3-website-us-west-1.amazonaws.com
204.246.160.230	A	*.us.s3-website-us-west-1.amazonaws.com
204.246.160.231	PTR	anon-cp.storagegateway.us-west-1.amazonaws.com
204.246.160.232	A	client-cp.storagegateway.us-west-1.amazonaws.com
204.246.160.233	PTR	dp-1.storagegateway.us-west-1.amazonaws.com
204.246.160.235	PTR	proxy-app.storagegateway.us-west-1.amazonaws.com
204.246.160.238	PTR	s3-transfer-us-west-1.amazonaws.com
204.246.160.240	PTR	s3-us-west-1.amazonaws.com
204.246.160.243	PTR	s3-console-us-west-1.amazonaws.com
204.246.160.246	PTR	s3-website-us-west-1.amazonaws.com
204.246.160.246	A	*.s3-website-us-west-1.amazonaws.com
204.246.160.246	A	*.domains.albionfire.com
204.246.160.247	PTR	glacier.us-west-1.amazonaws.com
204.246.160.249	PTR	dp-1.storagegateway.us-west-1.amazonaws.com
204.246.160.250	PTR	storagegateway.us-west-1.amazonaws.com
204.246.160.251	PTR	proxy-app.storagegateway.us-west-1.amazonaws.com
204.246.160.253	PTR	s3-transfer-us-west-1.amazonaws.com
204.246.161.187	PTR	anon-cp.storagegateway.us-west-1.amazonaws.com
204.246.161.188	PTR	dp-1.storagegateway.us-west-1.amazonaws.com
204.246.161.190	PTR	proxy-app.storagegateway.us-west-1.amazonaws.com