Robtex

Up: 185.11.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.11.52.0/23
Down right: 185.11.54.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.11.52.3	PTR	brhidptd04
185.11.52.4	PTR	mohidp7201
185.11.52.25	A+PTR	vpnbr.otb.net
185.11.52.30	A+PTR	ns1.otb.net
185.11.52.31	A+PTR	ns2.otb.net
185.11.52.32	A+PTR	otbfiletransfer.otb.net
185.11.52.42	A+PTR	connect.otb.net
185.11.52.50	PTR	prxauth.otb.net
185.11.52.51	PTR	dieselfragrances.com
185.11.52.51	PTR	dieselkid.com
185.11.52.51	A+PTR	dieselkids.com
185.11.52.52	PTR	www.jointhebrves.com
185.11.52.55	A+PTR	www.otb.org
185.11.52.56	PTR	testwww.otb.net
185.11.52.60	A+PTR	otbimessage.otb.net
185.11.52.62	A+PTR	share.otb.net
185.11.52.63	PTR	iemail.otb.net
185.11.52.64	A+PTR	mailb1.otb.net
185.11.52.65	A+PTR	mailb2.otb.net
185.11.52.66	A+PTR	mailm1.otb.net
185.11.52.94	A+PTR	dbook.otb.net
185.11.52.97	A+PTR	b2b.diesel.com
185.11.52.98	A+PTR	b2b.otb.net
185.11.52.105	PTR	ebtmsp01.eb.otb.net
185.11.52.110	A+PTR	vdc.otb.net
185.11.52.111	A+PTR	ttest.otb.net
185.11.52.250	PTR	vpnbrfw.otb.net
185.11.53.27	A	dns2.3winfra.com
185.11.53.66	PTR	mailm1.otb.net
185.11.53.121	A	wifi.diesel.com