Robtex

Up: 52.222.158.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 52.222.159.0/25
Down right: 52.222.159.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
52.222.159.30	A+PTR	server-52-222-159-30.fra53.r.cloudfront.net
52.222.159.85	PTR	server-52-222-159-85.fra53.r.cloudfront.net
52.222.159.85	A	exabytes.slack.com
52.222.159.85	A	android-hbp4465.slack.com
52.222.159.117	A+PTR	server-52-222-159-117.fra53.r.cloudfront.net
52.222.159.165	A+PTR	server-52-222-159-165.fra53.r.cloudfront.net
52.222.159.170	A+PTR	server-52-222-159-170.fra53.r.cloudfront.net
52.222.159.195	A+PTR	server-52-222-159-195.fra53.r.cloudfront.net
52.222.159.198	A+PTR	server-52-222-159-198.fra53.r.cloudfront.net
52.222.159.226	PTR	server-52-222-159-226.fra53.r.cloudfront.net
52.222.159.226	A	cmgdlx.slack.com
52.222.159.226	A	demica.slack.com
52.222.159.248	PTR	server-52-222-159-248.fra53.r.cloudfront.net