Robtex

Up: 52.222.204.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 52.222.204.0/25
Down right: 52.222.204.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
52.222.204.152	A+PTR	server-52-222-204-152.nrt20.r.cloudfront.net
52.222.204.174	A+PTR	server-52-222-204-174.nrt20.r.cloudfront.net
52.222.204.174	A	da7otfopzteok.cloudfront.net
52.222.204.196	A+PTR	server-52-222-204-196.nrt20.r.cloudfront.net
52.222.204.200	A+PTR	server-52-222-204-200.nrt20.r.cloudfront.net
52.222.204.205	PTR	server-52-222-204-205.nrt20.r.cloudfront.net
52.222.204.205	A	win-help-920.s3-accelerate.amazonaws.com
52.222.204.205	A	win-ayuda-727.s3-accelerate.amazonaws.com
52.222.204.226	A+PTR	server-52-222-204-226.nrt20.r.cloudfront.net
52.222.204.232	A+PTR	server-52-222-204-232.nrt20.r.cloudfront.net
52.222.204.232	A	win-ayuda-961.s3-accelerate.amazonaws.com
52.222.204.232	A	ncgm.s3-accelerate.amazonaws.com
52.222.204.239	A+PTR	server-52-222-204-239.nrt20.r.cloudfront.net