Robtex

Up: 99.84.208.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 99.84.212.0/23
Down right: 99.84.214.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
99.84.213.145	A+PTR	server-99-84-213-145.iad79.r.cloudfront.net
99.84.213.145	A	d2pocx62wxmm9q.cloudfront.net
99.84.213.165	A+PTR	server-99-84-213-165.iad79.r.cloudfront.net
99.84.213.165	A	d1l4w8x6xch1g2.cloudfront.net
99.84.213.177	A	placeit-images.s3-accelerate.amazonaws.com
99.84.213.177	A	ecu-prod-temp.s3-accelerate.amazonaws.com
99.84.213.177	A	win-help-921.s3-accelerate.amazonaws.com
99.84.214.10	A+PTR	server-99-84-214-10.iad79.r.cloudfront.net
99.84.214.10	A	bapi.flipboard.com
99.84.214.14	A	www.seriesx.net
99.84.214.32	A	secretsales.com
99.84.214.42	A	www.seriesx.net
99.84.214.57	A	www.seriesx.net
99.84.214.87	A	www.seriesx.net
99.84.214.165	A+PTR	server-99-84-214-165.iad79.r.cloudfront.net
99.84.214.165	A	ucla201811cyber5.slack.com
99.84.214.165	A	srozgaslacksample.slack.com
99.84.214.197	A	d1ean1sfxwwrux.cloudfront.net
99.84.215.7	A	unionltg.com
99.84.215.51	A	solargis.com
99.84.215.57	A	unionltg.com
99.84.215.60	PTR	server-99-84-215-60.iad79.r.cloudfront.net
99.84.215.60	A	solargis.com
99.84.215.70	A	solargis.com
99.84.215.77	A	unionltg.com
99.84.215.96	PTR	server-99-84-215-96.iad79.r.cloudfront.net
99.84.215.96	A	soccerladuma.co.za
99.84.215.112	A	unionltg.com
99.84.215.121	A	solargis.com
99.84.215.176	A+PTR	server-99-84-215-176.iad79.r.cloudfront.net
99.84.215.230	A+PTR	server-99-84-215-230.iad79.r.cloudfront.net
99.84.215.244	A+PTR	server-99-84-215-244.iad79.r.cloudfront.net
99.84.215.244	A	d3ag4hukkh62yn.cloudfront.net
99.84.215.248	A+PTR	server-99-84-215-248.iad79.r.cloudfront.net
99.84.215.248	A	d1hggdpqfkmafb.cloudfront.net