Robtex

Up: 157.240.220.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 157.240.221.0/25
Down right: 157.240.221.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.240.221.10	A+PTR	edge-video-shv-01-lhr8.fbcdn.net
157.240.221.16	A+PTR	xx-fbcdn-shv-01-lhr8.fbcdn.net
157.240.221.16	A	scontent-lhr8-1.xx.fbcdn.net
157.240.221.18	PTR	edge-star-shv-01-lhr8.facebook.com
157.240.221.18	A	facebookconnectmobile.org
157.240.221.18	A	instagramsupport.com
157.240.221.32	A+PTR	iorg-fba-edge-shv-01-lhr8.facebook.com
157.240.221.35	A+PTR	edge-star-mini-shv-01-lhr8.facebook.com
157.240.221.35	A	fb.me
157.240.221.37	A+PTR	edge-z-m-mini-shv-01-lhr8.facebook.com
157.240.221.37	A	z-m-scontent-lhr.xx.fbcdn.net
157.240.221.39	A	fc3a57dbb80k2kgxaiq-zvbfdxem1495774997-sonar.xz.fbcdn.net
157.240.221.39	A	f0a032cba80kdno4pyq-svshkcml1501038987-sonar.xz.fbcdn.net
157.240.221.39	A	f74e1b42280kdbudr5q-uecjljvy1490133090-sonar.xz.fbcdn.net
157.240.221.41	PTR	bart2.merisel.com
157.240.221.48	A+PTR	edge-turnservice-shv-01-lhr8.facebook.com
157.240.221.60	A+PTR	whatsapp-cdn-shv-01-lhr8.fbcdn.net
157.240.221.60	A	wf79a48c71k2gcu6bd-g44timbrga4tenb.snr.whatsapp.net
157.240.221.61	A+PTR	whatsapp-chatd-edge-shv-01-lhr8.facebook.com
157.240.221.62	A+PTR	edgeray-shv-01-lhr8.facebook.com
157.240.221.63	A+PTR	instagram-p3-shv-01-lhr8.fbcdn.net
157.240.221.63	A	scontent-a-lhr.cdninstagram.com
157.240.221.63	A	scontent-lhr.cdninstagram.com
157.240.221.114	PTR	buy.merisel.com
157.240.221.241	PTR	ftp01.merisel.com