Robtex

Up: 208.84.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.84.48.0/22
Down right: 208.84.52.0/22

IP	Type	Hostname
208.84.48.52	A+PTR	dns.lax1.wbsconnect.com
208.84.48.55	A	secure.wbsconnect.com
208.84.49.45	PTR	tieatl-server1.telx.com
208.84.49.52	A	locustraxx.net
208.84.50.27	PTR	ns1.rookdns.com
208.84.50.27	A	parkersinrye.com
208.84.50.254	PTR	ns1432.ztomy.com
208.84.51.194	PTR	bittitan.com
208.84.51.195	PTR	igw1.bittitan.com
208.84.51.197	PTR	bittitan.com
208.84.51.200	PTR	bittitan.com
208.84.51.201	PTR	bittitan.com
208.84.51.202	PTR	bittitan.com
208.84.51.203	PTR	bittitan.com
208.84.51.208	PTR	bittitan.com
208.84.51.209	PTR	bittitan.com
208.84.51.210	PTR	bittitan.com
208.84.51.211	PTR	bittitan.com
208.84.51.216	PTR	bittitan.com
208.84.51.217	PTR	bittitan.com
208.84.51.218	PTR	bittitan.com
208.84.51.219	PTR	bittitan.com
208.84.53.93	PTR	mail.idtechsolutions.com
208.84.53.230	A	mail.capitolfloors.com
208.84.55.10	A+PTR	dns5.fusionapps.net
208.84.55.21	PTR	smtp11.indservice.com
208.84.55.24	PTR	smtp14.indservice.com
208.84.55.25	PTR	smtp15.indservice.com
208.84.55.27	A+PTR	smtp16.indservice.com
208.84.55.129	PTR	theanchoragepoint.com
208.84.55.137	PTR	touringexec.com