Robtex

Up: 168.90.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 168.90.224.0/23
Down right: 168.90.226.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
168.90.224.45	A+PTR	ded224-45.bbctech.psi.br
168.90.224.65	A+PTR	ded224-65.bbctech.psi.br
168.90.224.123	PTR	ded224-123.bbctech.psi.br
168.90.224.185	PTR	ded224-185.bbctech.psi.br
168.90.224.186	PTR	ded224-186.bbctech.psi.br
168.90.224.186	A	acrlink.com.br
168.90.224.186	A	www.acrlink.com.br
168.90.225.10	A	mx3.usinasaojose.com.br
168.90.225.58	PTR	ded225-58.bbctech.psi.br
168.90.225.82	A+PTR	ded225-82.bbctech.psi.br
168.90.225.142	A+PTR	ded225-142.bbctech.psi.br
168.90.225.170	A+PTR	ded225-170.bbctech.psi.br
168.90.226.12	PTR	cache.google.com
168.90.226.12	A	r1.sn-ccjuxjicg-gxje.googlevideo.com
168.90.226.12	A	r1---sn-ccjuxjicg-gxje.googlevideo.com
168.90.226.13	PTR	cache.google.com
168.90.226.14	PTR	cache.google.com
168.90.226.16	A	r5.sn-ccjuxjicg-gxje.c.youtube.com
168.90.226.16	A	r5---sn-ccjuxjicg-gxje.gvt1.com
168.90.226.16	A	r5---sn-ccjuxjicg-gxje.googlevideo.com
168.90.226.18	PTR	cache.google.com
168.90.226.81	A	scontent.frec6-1.fna.fbcdn.net
168.90.226.81	A	external.frec6-1.fna.fbcdn.net
168.90.226.82	A	video.frec6-1.fna.fbcdn.net
168.90.226.94	A	sonar.frec6-1.fna.fbcdn.net
168.90.226.96	PTR	cache.google.com
168.90.226.96	A	instagram.frec6-1.fna.fbcdn.net
168.90.226.97	PTR	cache.google.com
168.90.226.97	A	media.frec6-1.fna.whatsapp.net
168.90.226.98	PTR	fna.fbrec06
168.90.226.98	A	z-p3-scontent.frec6-1.fna.fbcdn.net
168.90.226.104	A	z-1-external.frec6-1.fna.fbcdn.net
168.90.226.104	A	z-1-video.frec6-1.fna.fbcdn.net
168.90.226.104	A	z-1-scontent.frec6-1.fna.fbcdn.net
168.90.226.201	PTR	ded226-201.bbctech.psi.br
168.90.226.201	A	speedtest.bbgtelecom.com.br
168.90.226.234	PTR	ded226-234.bbctech.psi.br
168.90.226.234	A	ipv4-c001-rec002-bbctech-br-isp.1.oca.nflxvideo.net
168.90.226.235	PTR	ded226-235.bbctech.psi.br
168.90.226.235	A	ipv4-c002-rec002-bbctech-br-isp.1.oca.nflxvideo.net
168.90.226.250	A	occ-2-1341-1001.1.nflxso.net
168.90.226.250	A	occ-0-1341-1356.1.nflxso.net
168.90.226.250	A	occ-1-1341-28.1.nflxso.net
168.90.226.253	PTR	ded226-253.bbctech.psi.br
168.90.226.253	A	occ-2-1341-1001.1.nflxso.net
168.90.226.253	A	occ-0-1341-1356.1.nflxso.net
168.90.227.13	A+PTR	ded227-13.bbctech.psi.br
168.90.227.70	PTR	ded227-70.bbctech.psi.br
168.90.227.70	A	www.ghic.com.br
168.90.227.185	A+PTR	ded227-185.bbctech.psi.br
168.90.227.205	A+PTR	ded227-205.bbctech.psi.br
168.90.227.242	A+PTR	ded227-242.bbctech.psi.br