Robtex

Up: 64.140.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.140.84.0/23
Down right: 64.140.86.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.140.84.89	PTR	t1-3-2-0-9-27.edge1.cincinnati1.level3.net
64.140.84.121	A	advancedmerchantservices.com
64.140.85.2	PTR	mail.ctgusa.com
64.140.85.3	PTR	mail.bfca.com
64.140.85.98	PTR	mail.lovante.com
64.140.85.227	PTR	mail.mimvista.com
64.140.85.228	A	csitko.yi.org
64.140.86.75	A	mail.veracept.com
64.140.86.75	A	mail.regionalimaging.com
64.140.86.75	A	veracept.com
64.140.86.197	PTR	64-140-86-197.realtyfinance.com