Robtex

Up: 157.240.196.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 157.240.197.0/25
Down right: 157.240.197.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.240.197.9	A+PTR	edge-video-shv-01-lim1.fbcdn.net
157.240.197.9	A	video-lim1-1.xx.fbcdn.net
157.240.197.15	A+PTR	xx-fbcdn-shv-01-lim1.fbcdn.net
157.240.197.15	A	scontent-lim1-1.xx.fbcdn.net
157.240.197.17	A+PTR	edge-star-shv-01-lim1.facebook.com
157.240.197.35	A+PTR	edge-star-mini-shv-01-lim1.facebook.com
157.240.197.38	A	z-p3-scontent-sin1-1.xx.fbcdn.net
157.240.197.38	A	fff75ba8580-ecvredqz1552671664-sonar.xz.fbcdn.net
157.240.197.38	A	fa50fa65d80kz4zjaiq-umomfvvw1483450937-sonar.xz.fbcdn.net
157.240.197.60	A+PTR	whatsapp-cdn-shv-01-lim1.fbcdn.net
157.240.197.60	A	w96481a061kizmhawb-gm3dsmbrgy3daoby.snr.whatsapp.net
157.240.197.60	A	media-lim1-1.cdn.whatsapp.net
157.240.197.62	PTR	edgeray-shv-01-lim1.facebook.com
157.240.197.63	A+PTR	instagram-p3-shv-01-lim1.fbcdn.net
157.240.197.63	A	scontent-lim1-1.cdninstagram.com