Robtex

Up: 157.240.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 157.240.224.0/20
Down right: 157.240.240.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.240.224.39	A	sonar-iev1-1.xx.fbcdn.net
157.240.224.39	A	fa0a6263880kdno4pyq-gyingflt1486694825-sonar.xz.fbcdn.net
157.240.224.63	PTR	instagram-p3-shv-01-iev1.fbcdn.net
157.240.225.39	A	f1333453080kdaflosa-hirctnnl1489118440-sonar.xz.fbcdn.net
157.240.225.39	A	fa3374a2e80kvrt2dyq-radmbqoe1496231565-sonar.xz.fbcdn.net
157.240.225.39	A	f771eb12880-ythwcdlr1542871383-sonar.xz.fbcdn.net
157.240.225.60	PTR	whatsapp-cdn-shv-01-man2.fbcdn.net
157.240.227.39	A	f55587a3a80kiijob4q-ioccjphc1490025729-sonar.xz.fbcdn.net
157.240.227.39	A	fa5f7225080-mgmqqnca1550062944-sonar.xz.fbcdn.net
157.240.227.60	A	wede5868f1kzn7aoxc-gm4dqnrxgi3tkmzv.snr.whatsapp.net
157.240.228.35	PTR	edge-star-mini-shv-01-tir2.facebook.com
157.240.228.60	A	sonar-tir.cdn.whatsapp.net
157.240.229.17	PTR	edge-star-shv-02-iad3.facebook.com
157.240.229.35	PTR	edge-star-mini-shv-02-iad3.facebook.com
157.240.229.39	A	f7c5fa09580-xjwyyvlp1540582249-sonar.xz.fbcdn.net
157.240.231.39	A	f89faed5b80khvnz4mq-etltlzzd1525102908-sonar.xz.fbcdn.net
157.240.233.39	A	fe803fe6480kzqioy3q-bxazowxe1489522894-sonar.xz.fbcdn.net
157.240.233.39	A	fd95c60c780-iiszdpyf1550841677-sonar.xz.fbcdn.net
157.240.235.2	PTR	edge-video-shv-04-sin6.fbcdn.net
157.240.236.2	A	video-frx5-2.xx.fbcdn.net
157.240.236.15	PTR	edge-star-shv-02-frx5.facebook.com
157.240.236.15	A	ffbymail.com
157.240.236.15	A	facebookappmail.com
157.240.236.35	A	fbsbx.com
157.240.236.39	A	fd3a9efa880kislnjiy-hajaqqmo1490586913-sonar.xz.fbcdn.net
157.240.236.39	A	f3220413480kdno4pyq-duijgpwx1503982160-sonar.xz.fbcdn.net
157.240.236.174	PTR	instagram-p42-shv-02-frx5.fbcdn.net
157.240.240.39	A	fdd8734ac80kiidxvqq-umibtwel1484604693-sonar.xz.fbcdn.net
157.240.240.39	A	fee7dc90080-qketebra1545145560-sonar.xz.fbcdn.net
157.240.240.58	PTR	edge-turnservice-shv-01-lcy1.facebook.com
157.240.240.60	PTR	whatsapp-cdn-shv-01-lcy1.fbcdn.net
157.240.240.61	A	whatsapp-chatd-edge-shv-01-lcy1.facebook.com
157.240.240.62	A	edgeray-shv-01-lcy1.facebook.com
157.240.241.1	PTR	xx-fbcdn-shv-02-lga3.fbcdn.net
157.240.241.1	A	scontent-lga3-2.xx.fbcdn.net
157.240.241.34	PTR	edge-mqtt-mini-shv-02-lga3.facebook.com
157.240.241.35	PTR	edge-star-mini-shv-02-lga3.facebook.com
157.240.241.39	PTR	edge-sonar-mini-shv-02-lga3.fbcdn.net
157.240.241.39	A	f9460104680-fnpjvaaf1549313578-sonar.xz.fbcdn.net
157.240.241.60	PTR	whatsapp-cdn-shv-02-lga3.fbcdn.net
157.240.241.63	A	instagram-p3-shv-02-lga3.fbcdn.net
157.240.241.174	PTR	instagram-p42-shv-02-lga3.fbcdn.net