Robtex

Up: 52.85.217.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 52.85.217.128/26
Down right: 52.85.217.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
52.85.217.145	PTR	server-52-85-217-145.cdg3.r.cloudfront.net
52.85.217.145	A	presentation-hz72146.slack.com
52.85.217.145	A	qualitychqm50.slack.com
52.85.217.157	PTR	server-52-85-217-157.jnb50.r.cloudfront.net
52.85.217.157	A	auth0.slack.com
52.85.217.160	A+PTR	server-52-85-217-160.cdg51.r.cloudfront.net
52.85.217.160	A	nugu-team.slack.com
52.85.217.160	A	teamte10.slack.com
52.85.217.178	A	static-cdn.e2ma.net
52.85.217.228	A	socialrobotcommunity.slack.com
52.85.217.239	A+PTR	server-52-85-217-239.cdg51.r.cloudfront.net
52.85.217.240	A+PTR	server-52-85-217-240.cdg51.r.cloudfront.net
52.85.217.250	A+PTR	server-52-85-217-250.cdg3.r.cloudfront.net
52.85.217.250	A	controlpanel.slack.com
52.85.217.250	A	aexp-imdp.slack.com