Robtex

Up: 54.231.232.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 54.231.233.0/25
Down right: 54.231.233.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.231.233.2	PTR	s3-us-west-1-w.amazonaws.com
54.231.233.3	PTR	s3-website-us-west-1.amazonaws.com
54.231.233.3	A	matchbox.com.s3-website-us-west-1.amazonaws.com
54.231.233.3	A	au.s3-website-us-west-1.amazonaws.com
54.231.233.4	PTR	s3-transfer-us-west-1.amazonaws.com
54.231.233.11	PTR	s3-website-us-west-1.amazonaws.com
54.231.233.11	A	au.s3-website-us-west-1.amazonaws.com
54.231.233.64	PTR	s3-us-west-1.amazonaws.com
54.231.233.66	PTR	s3-us-west-1-w.amazonaws.com
54.231.233.67	PTR	s3-website-us-west-1.amazonaws.com
54.231.233.67	A	matchbox.com.s3-website-us-west-1.amazonaws.com
54.231.233.67	A	au.s3-website-us-west-1.amazonaws.com
54.231.233.68	PTR	s3-transfer-us-west-1.amazonaws.com
54.231.233.74	PTR	s3-us-west-1-w.amazonaws.com
54.231.233.75	PTR	s3-website-us-west-1.amazonaws.com
54.231.233.75	A	www.clantemplates.com.s3-website-us-west-1.amazonaws.com
54.231.233.75	A	www.crowdcargo.com
54.231.233.76	PTR	s3-transfer-us-west-1.amazonaws.com
54.231.233.82	PTR	s3-us-west-1-w.amazonaws.com
54.231.233.83	PTR	s3-website-us-west-1.amazonaws.com
54.231.233.83	A	matchbox.com.s3-website-us-west-1.amazonaws.com
54.231.233.83	A	au.s3-website-us-west-1.amazonaws.com
54.231.233.84	PTR	s3-transfer-us-west-1.amazonaws.com
54.231.233.91	PTR	s3-website-us-west-1.amazonaws.com
54.231.233.91	A	by.s3-website-us-west-1.amazonaws.com
54.231.233.91	A	10776.s3-website-us-west-1.amazonaws.com