Robtex

Up: 170.150.232.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 170.150.236.0/23
Down right: 170.150.238.0/23

IP	Type	Hostname
170.150.236.17	A	scontent.fcfc2-1.fna.fbcdn.net
170.150.236.17	A	external.fcfc2-1.fna.fbcdn.net
170.150.236.18	A	video.fcfc2-1.fna.fbcdn.net
170.150.236.30	A+PTR	170-150-236-30.gegnet.com.br
170.150.236.30	A	sonar.fcfc2-1.fna.fbcdn.net
170.150.236.32	A+PTR	170-150-236-32.gegnet.com.br
170.150.236.32	A	instagram.fcfc2-1.fna.fbcdn.net
170.150.236.34	A+PTR	170-150-236-34.gegnet.com.br
170.150.236.34	A	z-p3-scontent.fcfc2-1.fna.fbcdn.net
170.150.236.40	A	z-1-scontent.fcfc2-1.fna.fbcdn.net
170.150.236.40	A	z-1-video.fcfc2-1.fna.fbcdn.net
170.150.236.118	A+PTR	170-150-236-118.gegnet.com.br
170.150.236.118	A	tomasellitelecom.com
170.150.236.146	A+PTR	170-150-236-146.gegnet.com.br
170.150.236.194	A	occ-0-1814-1356.1.nflxso.net
170.150.237.17	A+PTR	170-150-237-17.gegnet.com.br
170.150.237.17	A	scontent.ffln5-1.fna.fbcdn.net
170.150.237.18	A+PTR	170-150-237-18.gegnet.com.br
170.150.237.18	A	video.ffln5-1.fna.fbcdn.net
170.150.237.30	A+PTR	170-150-237-30.gegnet.com.br
170.150.237.30	A	sonar.ffln5-1.fna.fbcdn.net
170.150.237.32	A+PTR	170-150-237-32.gegnet.com.br
170.150.237.32	A	z-p3-scontent.ffln5-1.fna.fbcdn.net
170.150.237.33	A+PTR	170-150-237-33.gegnet.com.br
170.150.237.33	A	instagram.ffln5-1.fna.fbcdn.net
170.150.237.34	PTR	170-150-237-34.gegnet.com.br
170.150.237.102	A+PTR	mail.creci-sc.gov.br
170.150.237.118	A+PTR	170-150-237-118.gegnet.com.br
170.150.237.240	A	mail.dujua.com.br
170.150.237.241	A+PTR	170-150-237-241.gegnet.com.br
170.150.237.242	A+PTR	mail.stahlfabrik.com.br
170.150.237.242	A	mail.equibrasil.com.br