Robtex

Up: 199.7.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.7.172.0/23
Down right: 199.7.174.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.7.172.10	A+PTR	rt0.new-york-1.content.jnctn.net
199.7.172.17	A	noc1.new-york-1.content.jnctn.net
199.7.172.21	PTR	mx0.new-york-1.content.jnctn.net
199.7.172.21	A	mx1.jnctn.net
199.7.172.28	A+PTR	drupal-www0.new-york-1.content.jnctn.net
199.7.172.28	A	onsip.com
199.7.172.38	A	www.getonsip.com
199.7.172.39	A+PTR	insta-www0.new-york-1.content.jnctn.net
199.7.172.39	A	insta.onsip.com
199.7.172.39	A	app.onsip.com
199.7.172.40	A+PTR	admin-www0.new-york-1.content.jnctn.net
199.7.172.40	A	admin.onsip.com
199.7.172.41	A	signup.onsip.com
199.7.172.47	A	admin-beta.onsip.com
199.7.172.49	A	beta.jnctn.com
199.7.172.99	A	cpl0.new-york-1.content.jnctn.net
199.7.172.123	A	onsip.com
199.7.172.123	A	getonsip.com
199.7.172.123	A	www.junctionnetworks.com
199.7.172.128	A+PTR	boot-app0.new-york-1.content.jnctn.net
199.7.172.128	A	boot.onsip.com
199.7.172.223	A+PTR	adminapi6-www0.new-york-1.content.jnctn.net
199.7.172.223	A	api.onsip.com
199.7.173.19	A	nagios1.new-york-1.realtime.jnctn.net
199.7.173.31	A+PTR	ns2.jnctn.net
199.7.173.32	A+PTR	ns3.jnctn.net
199.7.173.33	A+PTR	ns2-g.jnctn.net
199.7.173.34	A+PTR	ns3-g.jnctn.net
199.7.173.100	A+PTR	core-proxy0.new-york-1.realtime.jnctn.net
199.7.173.100	A	sip.onsip.com
199.7.173.101	A+PTR	core-proxy1.new-york-1.realtime.jnctn.net
199.7.173.102	PTR	core-proxy2.new-york-1.realtime.jnctn.net
199.7.173.103	PTR	core-proxy3.new-york-1.realtime.jnctn.net
199.7.173.182	A+PTR	edge-proxy2.new-york-1.realtime.jnctn.net
199.7.173.182	A	edge.sip.onsip.com
199.7.173.183	A+PTR	edge-proxy3.new-york-1.realtime.jnctn.net
199.7.173.183	A	edge.sip.onsip.com
199.7.174.21	PTR	mx0.los-angeles-1.content.jnctn.net
199.7.174.21	A	mx2.jnctn.net
199.7.175.31	A	ns4.jnctn.net
199.7.175.32	A+PTR	ns1.jnctn.net
199.7.175.33	A+PTR	ns4-g.jnctn.net
199.7.175.34	A+PTR	ns1-g.jnctn.net
199.7.175.93	A	proxy3-rtp.los-angeles-1.realtime.jnctn.net
199.7.175.100	A+PTR	core-proxy0.los-angeles-1.realtime.jnctn.net
199.7.175.100	A	sip.onsip.com
199.7.175.101	A+PTR	core-proxy1.los-angeles-1.realtime.jnctn.net
199.7.175.101	A	sip.onsip.com
199.7.175.102	PTR	core-proxy2.los-angeles-1.realtime.jnctn.net
199.7.175.103	PTR	core-proxy3.los-angeles-1.realtime.jnctn.net
199.7.175.120	A	acd.jnctn.net
199.7.175.180	A+PTR	edge-proxy0.los-angeles-1.realtime.jnctn.net
199.7.175.180	A	edge.sip.onsip.com
199.7.175.181	A+PTR	edge-proxy1.los-angeles-1.realtime.jnctn.net
199.7.175.181	A	edge.sip.onsip.com
199.7.175.196	A	despatch0.los-angeles-1.realtime.jnctn.net