Robtex

Up: 157.240.208.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 157.240.209.0/25
Down right: 157.240.209.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.240.209.8	A+PTR	edge-video-shv-01-itm1.fbcdn.net
157.240.209.8	A	video-itm1-1.xx.fbcdn.net
157.240.209.14	A+PTR	xx-fbcdn-shv-01-itm1.fbcdn.net
157.240.209.14	A	scontent-itm1-1.xx.fbcdn.net
157.240.209.16	A+PTR	edge-star-shv-01-itm1.facebook.com
157.240.209.35	A+PTR	edge-star-mini-shv-01-itm1.facebook.com
157.240.209.38	PTR	edge-sonar-mini-shv-01-itm1.fbcdn.net
157.240.209.38	A	ff8c6e5f480kdno4pyq-ntlfxuwe1496135279-sonar.xz.fbcdn.net
157.240.209.38	A	f0d33312c80kd6uk5dq-fvqrnqnm1524997517-sonar.xz.fbcdn.net
157.240.209.63	A+PTR	instagram-p3-shv-01-itm1.fbcdn.net
157.240.209.63	A	scontent-itm1-1.cdninstagram.com
157.240.209.174	A+PTR	instagram-p42-shv-01-itm1.fbcdn.net