Robtex

Up: 168.90.88.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 168.90.88.0/23
Down right: 168.90.90.0/23

IP	Type	Hostname
168.90.88.13	PTR	13.88.90.168.static.megalinkpi.net.br
168.90.88.25	PTR	25.88.90.168.static.megalinkpi.net.br
168.90.88.50	A+PTR	168.90.88.50.megalinkpi.net.br
168.90.88.98	A+PTR	168.90.88.98.megalinkpi.net.br
168.90.89.35	A+PTR	168.90.89.35.megalinkpi.net.br
168.90.89.69	PTR	69.89.90.168.static.megalinkpi.net.br
168.90.89.125	A+PTR	168.90.89.125.megalinkpi.net.br
168.90.89.145	PTR	145.89.90.168.static.megalinkpi.net.br
168.90.89.145	A	scontent.fthe3-1.fna.fbcdn.net
168.90.89.146	PTR	146.89.90.168.static.megalinkpi.net.br
168.90.89.146	A	video.fthe3-1.fna.fbcdn.net
168.90.89.160	PTR	160.89.90.168.static.megalinkpi.net.br
168.90.89.160	A	z-p3-scontent.fthe3-1.fna.fbcdn.net
168.90.89.161	A	instagram.fthe3-1.fna.fbcdn.net
168.90.89.162	PTR	162.89.90.168.static.megalinkpi.net.br
168.90.89.162	A	media.fthe3-1.fna.whatsapp.net
168.90.89.194	PTR	194.89.90.168.static.megalinkpi.net.br
168.90.89.194	A	ipv4-c001-the001-mega-teleinformatica-isp.1.oca.nflxvideo.net
168.90.89.214	A+PTR	168.90.89.214.megalinkpi.net.br
168.90.89.237	A+PTR	168.90.89.237.megalinkpi.net.br
168.90.89.238	A+PTR	168.90.89.238.megalinkpi.net.br
168.90.90.30	A+PTR	168.90.90.30.megalinkpi.net.br
168.90.90.102	A+PTR	168.90.90.102.megalinkpi.net.br
168.90.90.114	PTR	114.90.90.168.static.megalinkpi.net.br
168.90.90.171	PTR	171.90.90.168.static.megalinkpi.net.br
168.90.91.22	PTR	22.91.90.168.static.megalinkpi.net.br
168.90.91.101	PTR	101.91.90.168.static.megalinkpi.net.br
168.90.91.140	PTR	cache.google.com
168.90.91.140	A	r1.sn-uxaxpo4vcg-j28e.gvt1.com
168.90.91.140	A	r1.sn-uxaxpo4vcg-j28e.googlevideo.com
168.90.91.141	PTR	cache.google.com
168.90.91.141	A	r2.sn-uxaxpo4vcg-j28e.gvt1.com
168.90.91.141	A	r2.sn-uxaxpo4vcg-j28e.googlevideo.com
168.90.91.190	PTR	190.91.90.168.static.megalinkpi.net.br
168.90.91.218	PTR	218.91.90.168.static.megalinkpi.net.br