Robtex

Up: 157.240.8.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 157.240.9.0/25
Down right: 157.240.9.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.240.9.1	A	netprobe-bgp-01-sof1.facebook.com
157.240.9.2	A+PTR	livestream-edgetee-shv-01-sof1.facebook.com
157.240.9.2	A	edgetee-sof.xx.fbcdn.net
157.240.9.4	A+PTR	edge-resolver001-bgp-01-sof1.facebook.com
157.240.9.5	A	livestream-edgetee-upload-shv-01-sof1.facebook.com
157.240.9.6	A	edge-atlas-shv-01-sof1.facebook.com
157.240.9.7	A	edge-extern-shv-01-sof1.facebook.com
157.240.9.10	PTR	edge-msgr-latest-shv-01-sof1.facebook.com
157.240.9.10	A	edge-livestream-api-upload-shv-01-sof1.facebook.com
157.240.9.13	A+PTR	edge-mqtt-shv-01-sof1.facebook.com
157.240.9.14	A	edge-secure-shv-01-sof1.facebook.com
157.240.9.15	A	edge-shortwave-shv-01-sof1.facebook.com
157.240.9.18	A+PTR	edge-star-shv-01-sof1.facebook.com
157.240.9.19	A+PTR	edge-video-shv-01-sof1.fbcdn.net
157.240.9.19	A	video-sof1-1.xx.fbcdn.net
157.240.9.19	A	video-a-sof.xx.fbcdn.net
157.240.9.22	A+PTR	edge-z-p1-shv-01-sof1.facebook.com
157.240.9.23	PTR	xx-fbcdn-shv-01-sof1.fbcdn.net
157.240.9.23	A	external-sof.xx.fbcdn.net
157.240.9.23	A	fe7d7eee880kz2xm2li-boxuledv1496545837-sonar.xx.fbcdn.net
157.240.9.32	A	edge-mqtt-mini-shv-01-sof1.facebook.com
157.240.9.33	PTR	whatsapp-chatd-msgr-mini-edge-shv-01-sof1.facebook.com
157.240.9.33	A	edge-snaptu-http-mini-shv-01-sof1.facebook.com
157.240.9.34	PTR	edge-sonar-mini-shv-01-sof1.fbcdn.net
157.240.9.34	A	fe7b12d3680kdno4pyq-uyzgfbkv1498200125-sonar.xx.fbcdn.net
157.240.9.34	A	f164323c380-fhgbqtbj1540507744-sonar.xx.fbcdn.net
157.240.9.35	A+PTR	edge-star-mini-shv-01-sof1.facebook.com
157.240.9.36	A+PTR	edge-z-m-mini-shv-01-sof1.facebook.com
157.240.9.36	A	z-m-scontent-sof.xx.fbcdn.net
157.240.9.37	A+PTR	instagram-p15-shv-01-sof1.fbcdn.net
157.240.9.37	A	edge-z-mini-shv-01-sof1.facebook.com
157.240.9.38	PTR	edge-fblite-tcp-mini-shv-01-sof1.facebook.com
157.240.9.38	A	edge-star-z-mini-shv-01-sof1.facebook.com
157.240.9.38	A	z-m-scontent-sof1-1.xx.fbcdn.net
157.240.9.41	PTR	edge-z-1-p2-shv-01-sof1.facebook.com
157.240.9.41	A	z-1-scontent-sof1-1.xx.fbcdn.net
157.240.9.48	A+PTR	edge-turnservice-shv-01-sof1.facebook.com
157.240.9.50	A+PTR	edge-z-p3-shv-01-sof1.facebook.com
157.240.9.50	A	z-p3-scontent-sof1-1.xx.fbcdn.net
157.240.9.50	A	z-p3-scontent-sof.xx.fbcdn.net
157.240.9.51	A+PTR	edgeray-shv-01-sof1.facebook.com
157.240.9.52	A+PTR	instagram-p3-shv-01-sof1.fbcdn.net
157.240.9.52	A	scontent-sof1-1.cdninstagram.com
157.240.9.52	A	scontent-sof.cdninstagram.com
157.240.9.53	A+PTR	whatsapp-cdn-shv-01-sof1.fbcdn.net
157.240.9.53	A	wcb4027021knzfmygc-ge4damrrgqytgmbx.snr.whatsapp.net
157.240.9.53	A	wfcc6c9b71ks56i55d-g44deojzge4tb.snr.whatsapp.net
157.240.9.54	A+PTR	whatsapp-chatd-edge-shv-01-sof1.facebook.com
157.240.9.169	A+PTR	edge-z-p4-shv-01-sof1.facebook.com
157.240.9.169	A	z-p4-scontent-sof1-1.xx.fbcdn.net
157.240.9.196	A+PTR	edge-tcp-tunnel-fbonly-shv-01-sof1.facebook.com