Robtex

Up: 157.240.28.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 157.240.29.0/25
Down right: 157.240.29.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.240.29.1	PTR	livestream-edgetee-upload-shv-01-los2.facebook.com
157.240.29.1	A	edgetee-upload-los.xx.fbcdn.net
157.240.29.10	A+PTR	edge-mqtt-shv-01-los2.facebook.com
157.240.29.17	A+PTR	edge-snaptu-http-p1-shv-01-los2.facebook.com
157.240.29.18	A+PTR	edge-star-shv-01-los2.facebook.com
157.240.29.19	A+PTR	edge-tcp-tunnel-shv-01-los2.facebook.com
157.240.29.20	A+PTR	edge-video-shv-01-los2.fbcdn.net
157.240.29.20	A	video-los2-1.xx.fbcdn.net
157.240.29.26	A+PTR	xx-fbcdn-shv-01-los2.fbcdn.net
157.240.29.26	A	scontent-los2-1.xx.fbcdn.net
157.240.29.32	A+PTR	edge-mqtt-mini-shv-01-los2.facebook.com
157.240.29.33	A+PTR	edge-snaptu-http-mini-shv-01-los2.facebook.com
157.240.29.34	PTR	edge-sonar-mini-shv-01-los2.fbcdn.net
157.240.29.34	A	fd95f773d80-grkwisiy1540202219-sonar.xx.fbcdn.net
157.240.29.34	A	fb92ee44a80-wxktzght1543769787-sonar.xx.fbcdn.net
157.240.29.35	A+PTR	edge-star-mini-shv-01-los2.facebook.com
157.240.29.36	A+PTR	edge-star-z-mini-shv-01-los2.facebook.com
157.240.29.37	A+PTR	edge-z-m-mini-shv-01-los2.facebook.com
157.240.29.37	A	z-m-scontent-los2-1.xx.fbcdn.net
157.240.29.51	A+PTR	edge-z-p3-shv-01-los2.facebook.com
157.240.29.51	A	z-p3-scontent-los2-1.xx.fbcdn.net
157.240.29.53	A+PTR	whatsapp-cdn-shv-01-los2.fbcdn.net
157.240.29.53	A	media-los2-1.cdn.whatsapp.net
157.240.29.53	A	wede5868f1kzn7aoxc-gm4dqnrxgi3tkmzv.snr.whatsapp.net
157.240.29.54	A+PTR	whatsapp-chatd-edge-shv-01-los2.facebook.com
157.240.29.63	A	instagram-p3-shv-01-los2.fbcdn.net
157.240.29.63	A	scontent-los2-1.cdninstagram.com
157.240.29.174	A+PTR	instagram-p42-shv-01-los2.fbcdn.net
157.240.29.174	A	z-p42-scontent-los2-1.cdninstagram.com