Robtex

Up: 52.84.219.0/25
Can't show all results, try to descend to a more specific CIDR
Down left: 52.84.219.64/27
Down right: 52.84.219.96/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
52.84.219.68	PTR	server-52-84-219-68.sin3.r.cloudfront.net
52.84.219.68	A	perficient.slack.com
52.84.219.68	A	whopsec.slack.com
52.84.219.73	PTR	server-52-84-219-73.fco50.r.cloudfront.net
52.84.219.73	A	notmuchreading.slack.com
52.84.219.73	A	beyonds2.slack.com
52.84.219.74	A+PTR	server-52-84-219-74.sin3.r.cloudfront.net
52.84.219.75	A	d2fip2zjdheo1u.cloudfront.net
52.84.219.76	PTR	server-52-84-219-76.fco50.r.cloudfront.net
52.84.219.76	A	larouchepac.slack.com
52.84.219.76	A	0bsidian.slack.com
52.84.219.77	A	gefran.slack.com
52.84.219.77	A	uhdahi.slack.com
52.84.219.77	A	virtualbaseball.slack.com
52.84.219.80	A+PTR	server-52-84-219-80.sin3.r.cloudfront.net
52.84.219.80	A	mobile-health.slack.com
52.84.219.80	A	binbankdev.slack.com
52.84.219.84	A+PTR	server-52-84-219-84.sin3.r.cloudfront.net
52.84.219.84	A	dali-cdn.plus.nikecloud.com
52.84.219.85	A	vfnz-huawei.slack.com
52.84.219.85	A	datafordemocracy.slack.com
52.84.219.85	A	hqnettest.slack.com
52.84.219.86	PTR	server-52-84-219-86.sin3.r.cloudfront.net
52.84.219.86	A	atechsupporthq.slack.com
52.84.219.86	A	bluegrass.slack.com
52.84.219.87	PTR	server-52-84-219-87.fco50.r.cloudfront.net
52.84.219.87	A	mvideoat.slack.com
52.84.219.87	A	sbaresearch.slack.com
52.84.219.88	A+PTR	server-52-84-219-88.fco50.r.cloudfront.net
52.84.219.88	A	server-52-84-219-88.sin3.r.cloudfront.net
52.84.219.88	A	savurly.awsapps.com
52.84.219.89	PTR	server-52-84-219-89.sin3.r.cloudfront.net
52.84.219.89	A	chaincointeam.slack.com
52.84.219.89	A	makonjo.slack.com
52.84.219.92	PTR	server-52-84-219-92.sin3.r.cloudfront.net
52.84.219.92	A	engiecoe.slack.com
52.84.219.92	A	swissre-sandbox.slack.com
52.84.219.93	A+PTR	server-52-84-219-93.sin3.r.cloudfront.net
52.84.219.93	A	resources.rsvp.com.au
52.84.219.94	A+PTR	server-52-84-219-94.sin3.r.cloudfront.net
52.84.219.95	PTR	server-52-84-219-95.sin3.r.cloudfront.net
52.84.219.95	A	ddi.slack.com
52.84.219.95	A	vivosqm.slack.com
52.84.219.98	PTR	server-52-84-219-98.sin3.r.cloudfront.net
52.84.219.98	A	holo.slack.com
52.84.219.98	A	tiffoyn.slack.com
52.84.219.99	A+PTR	server-52-84-219-99.sin3.r.cloudfront.net
52.84.219.99	A	d3go6xms2gaqhr.cloudfront.net
52.84.219.100	A	mcoc-1100-vwsae.sparxcdn.net
52.84.219.100	A	mcoc-1300-xxxwj.sparxcdn.net
52.84.219.101	A+PTR	server-52-84-219-101.sin3.r.cloudfront.net
52.84.219.101	A	d21fq1pa02la9b.cloudfront.net
52.84.219.102	A+PTR	server-52-84-219-102.sin3.r.cloudfront.net
52.84.219.106	A+PTR	server-52-84-219-106.sin3.r.cloudfront.net
52.84.219.106	A	abertayhackers.slack.com
52.84.219.106	A	direttivo-adi.slack.com
52.84.219.109	A+PTR	server-52-84-219-109.sin3.r.cloudfront.net
52.84.219.109	A	d3amn7ayexbwsr.cloudfront.net
52.84.219.110	PTR	server-52-84-219-110.fco50.r.cloudfront.net
52.84.219.110	A	server-52-84-219-110.sin3.r.cloudfront.net
52.84.219.110	A	d2j5eefvccmbhc.cloudfront.net
52.84.219.112	A+PTR	server-52-84-219-112.sin3.r.cloudfront.net
52.84.219.112	A	d16tt60iode6o3.cloudfront.net
52.84.219.112	A	sift.notjet.net
52.84.219.118	A+PTR	server-52-84-219-118.sin3.r.cloudfront.net
52.84.219.118	A	d1lfb5jlhelosd.cloudfront.net
52.84.219.119	PTR	server-52-84-219-119.fco50.r.cloudfront.net
52.84.219.119	A	cognevo.slack.com
52.84.219.119	A	filthypoo.slack.com
52.84.219.122	PTR	server-52-84-219-122.sin3.r.cloudfront.net
52.84.219.122	A	rooffunding.slack.com
52.84.219.122	A	smithoptics-bike.slack.com
52.84.219.123	A+PTR	server-52-84-219-123.sin3.r.cloudfront.net
52.84.219.124	PTR	server-52-84-219-124.sin3.r.cloudfront.net
52.84.219.124	A	eatscanada.slack.com
52.84.219.124	A	rsidesign.slack.com
52.84.219.125	A+PTR	server-52-84-219-125.sin3.r.cloudfront.net
52.84.219.125	A	cdn.chatwork.com