Robtex

Up: 52.85.43.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 52.85.43.128/26
Down right: 52.85.43.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
52.85.43.137	PTR	server-52-85-43-137.mel50.r.cloudfront.net
52.85.43.137	A	nbsscrumteam.slack.com
52.85.43.137	A	latamstartup.slack.com
52.85.43.149	PTR	server-52-85-43-149.mel50.r.cloudfront.net
52.85.43.149	A	11st-reco-tf.slack.com
52.85.43.149	A	skt-aia.slack.com
52.85.43.160	A+PTR	server-52-85-43-160.mel50.r.cloudfront.net
52.85.43.160	A	d3qnr1m59zehbb.cloudfront.net
52.85.43.166	A+PTR	server-52-85-43-166.mel50.r.cloudfront.net
52.85.43.166	A	d27cwqlgojh9yd.cloudfront.net
52.85.43.174	A+PTR	server-52-85-43-174.mel50.r.cloudfront.net
52.85.43.191	A+PTR	server-52-85-43-191.mel50.r.cloudfront.net
52.85.43.191	A	tks17.slack.com
52.85.43.191	A	capitalonetech.slack.com
52.85.43.195	A+PTR	server-52-85-43-195.mel50.r.cloudfront.net
52.85.43.203	A+PTR	server-52-85-43-203.mel50.r.cloudfront.net
52.85.43.203	A	d20vhcsvtonloc.cloudfront.net
52.85.43.211	A+PTR	server-52-85-43-211.mel50.r.cloudfront.net
52.85.43.211	A	d2n3pv3l9r5wp5.cloudfront.net
52.85.43.218	A+PTR	server-52-85-43-218.mel50.r.cloudfront.net
52.85.43.218	A	tejtest.slack.com
52.85.43.218	A	irisns.slack.com
52.85.43.219	PTR	server-52-85-43-219.mel50.r.cloudfront.net
52.85.43.219	A	d335ogjdq0dee7.cloudfront.net
52.85.43.225	A+PTR	server-52-85-43-225.mel50.r.cloudfront.net
52.85.43.225	A	v-apps-team.slack.com
52.85.43.225	A	dwh.tinkoff.slack.com
52.85.43.231	A+PTR	server-52-85-43-231.mel50.r.cloudfront.net
52.85.43.231	A	d90nnyvqgmkzx.cloudfront.net
52.85.43.236	A+PTR	server-52-85-43-236.mel50.r.cloudfront.net
52.85.43.238	A+PTR	server-52-85-43-238.mel50.r.cloudfront.net
52.85.43.241	A+PTR	server-52-85-43-241.mel50.r.cloudfront.net
52.85.43.241	A	d11remhs00bd04.cloudfront.net
52.85.43.244	A+PTR	server-52-85-43-244.mel50.r.cloudfront.net