Robtex

Up: 81.173.96.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.173.104.0/22
Down right: 81.173.108.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.173.105.17	A	scontent.fmuc3-1.fna.fbcdn.net
81.173.105.18	A	video.fmuc3-1.fna.fbcdn.net
81.173.105.33	A	instagram.fmuc3-1.fna.fbcdn.net
81.173.105.34	A	media.fmuc3-1.fna.whatsapp.net
81.173.105.81	A	scontent.fham1-1.fna.fbcdn.net
81.173.105.82	A	video.fham1-1.fna.fbcdn.net
81.173.105.96	A	z-p3-scontent.fham1-1.fna.fbcdn.net
81.173.105.97	A	instagram.fham1-1.fna.fbcdn.net
81.173.105.98	A	media.fham1-1.fna.whatsapp.net
81.173.106.43	A	ipv4-c004-bog001-telxius-isp.1.oca.nflxvideo.net
81.173.106.45	A	ipv4-c003-bog001-telxius-isp.1.oca.nflxvideo.net
81.173.110.2	A	mail.totallygetit.com
81.173.110.2	A	mail.2girls1cupshirt.com
81.173.110.2	A	mailgate.garnierprojects.nl
81.173.110.3	PTR	mail.netholding.nl
81.173.110.10	A	support-act.nl
81.173.111.85	A	geo4.mcafee.com