Robtex

Up: 54.230.216.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 54.230.217.0/25
Down right: 54.230.217.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.230.217.9	A+PTR	server-54-230-217-9.mrs50.r.cloudfront.net
54.230.217.34	PTR	server-54-230-217-34.mrs50.r.cloudfront.net
54.230.217.34	A	bos.hugonieves36.dmusic.net
54.230.217.34	A	bingoblitz.hugonieves36.dmusic.net
54.230.217.57	PTR	server-54-230-217-57.osl50.r.cloudfront.net
54.230.217.57	A	server-54-230-217-57.mrs50.r.cloudfront.net
54.230.217.86	A	server-54-230-217-86.mrs50.r.cloudfront.net
54.230.217.99	A	server-54-230-217-99.mrs50.r.cloudfront.net
54.230.217.103	PTR	server-54-230-217-103.mrs50.r.cloudfront.net
54.230.217.112	A	server-54-230-217-112.mrs50.r.cloudfront.net
54.230.217.119	PTR	server-54-230-217-119.mrs50.r.cloudfront.net
54.230.217.128	A+PTR	server-54-230-217-128.mrs50.r.cloudfront.net
54.230.217.133	A	server-54-230-217-133.mrs50.r.cloudfront.net
54.230.217.150	A	server-54-230-217-150.mrs50.r.cloudfront.net
54.230.217.154	A	ds998.net
54.230.217.159	PTR	server-54-230-217-159.osl50.r.cloudfront.net
54.230.217.159	A	server-54-230-217-159.mrs50.r.cloudfront.net
54.230.217.166	A	server-54-230-217-166.mrs50.r.cloudfront.net
54.230.217.176	A	server-54-230-217-176.mrs50.r.cloudfront.net
54.230.217.182	A+PTR	server-54-230-217-182.mrs50.r.cloudfront.net
54.230.217.193	PTR	server-54-230-217-193.mrs50.r.cloudfront.net
54.230.217.203	A	server-54-230-217-203.mrs50.r.cloudfront.net
54.230.217.211	A+PTR	server-54-230-217-211.mrs50.r.cloudfront.net
54.230.217.237	A+PTR	server-54-230-217-237.mrs50.r.cloudfront.net
54.230.217.242	A	server-54-230-217-242.mrs50.r.cloudfront.net
54.230.217.248	A	server-54-230-217-248.mrs50.r.cloudfront.net
54.230.217.252	A+PTR	server-54-230-217-252.mrs50.r.cloudfront.net
54.230.217.253	A+PTR	server-54-230-217-253.mrs50.r.cloudfront.net