Robtex

Up: 64.32.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.32.216.0/23
Down right: 64.32.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.32.216.10	PTR	ip-64-32-216-10.dsl.iad.megapath.net
64.32.216.69	A	mail.ecomsharepoint.com
64.32.216.76	A+PTR	ip-64-32-216-76.dsl.iad.megapath.net
64.32.216.76	A	pc.biz
64.32.216.76	A	mail.pc.biz
64.32.216.78	A	ip-64-32-216-78.dsl.iad.megapath.net
64.32.216.80	A	ip-64-32-216-80.dsl.iad.megapath.net
64.32.216.85	A	ip-64-32-216-85.dsl.iad.megapath.net
64.32.216.90	PTR	beancreative.com
64.32.216.101	PTR	ip-64-32-216-101.dsl.iad.megapath.net
64.32.216.101	A	exchanget.com
64.32.216.101	A	mail.exchanget.com
64.32.217.1	A+PTR	ip-64-32-217-1.dsl.iad.megapath.net
64.32.217.2	A+PTR	ip-64-32-217-2.dsl.iad.megapath.net
64.32.217.3	PTR	openstandards.net
64.32.217.4	PTR	mail.ruppertcompanies.com
64.32.217.6	PTR	joshuabranch.com
64.32.217.23	A+PTR	ip-64-32-217-23.dsl.iad.megapath.net
64.32.217.28	A+PTR	ip-64-32-217-28.dsl.iad.megapath.net
64.32.217.31	A+PTR	ip-64-32-217-31.dsl.iad.megapath.net
64.32.217.33	A+PTR	ip-64-32-217-33.dsl.iad.megapath.net
64.32.217.34	A+PTR	ip-64-32-217-34.dsl.iad.megapath.net
64.32.217.37	A+PTR	ip-64-32-217-37.dsl.iad.megapath.net
64.32.217.43	A+PTR	ip-64-32-217-43.dsl.iad.megapath.net
64.32.217.52	A+PTR	ip-64-32-217-52.dsl.iad.megapath.net
64.32.217.54	A+PTR	ip-64-32-217-54.dsl.iad.megapath.net
64.32.217.57	A+PTR	ip-64-32-217-57.dsl.iad.megapath.net
64.32.217.63	A+PTR	ip-64-32-217-63.dsl.iad.megapath.net
64.32.217.65	A+PTR	ip-64-32-217-65.dsl.iad.megapath.net
64.32.217.69	A+PTR	ip-64-32-217-69.dsl.iad.megapath.net
64.32.217.77	A+PTR	ip-64-32-217-77.dsl.iad.megapath.net
64.32.217.78	A+PTR	ip-64-32-217-78.dsl.iad.megapath.net
64.32.217.83	A+PTR	ip-64-32-217-83.dsl.iad.megapath.net
64.32.217.86	A+PTR	ip-64-32-217-86.dsl.iad.megapath.net
64.32.217.92	A+PTR	ip-64-32-217-92.dsl.iad.megapath.net
64.32.217.98	A+PTR	ip-64-32-217-98.dsl.iad.megapath.net
64.32.217.100	A+PTR	ip-64-32-217-100.dsl.iad.megapath.net
64.32.217.102	A+PTR	ip-64-32-217-102.dsl.iad.megapath.net
64.32.217.103	A+PTR	ip-64-32-217-103.dsl.iad.megapath.net
64.32.217.114	A+PTR	ip-64-32-217-114.dsl.iad.megapath.net
64.32.217.120	A+PTR	ip-64-32-217-120.dsl.iad.megapath.net
64.32.217.121	A+PTR	ip-64-32-217-121.dsl.iad.megapath.net
64.32.217.125	A+PTR	ip-64-32-217-125.dsl.iad.megapath.net
64.32.217.127	A+PTR	ip-64-32-217-127.dsl.iad.megapath.net
64.32.217.128	A+PTR	ip-64-32-217-128.dsl.iad.megapath.net
64.32.217.129	A+PTR	ip-64-32-217-129.dsl.iad.megapath.net
64.32.217.131	A+PTR	ip-64-32-217-131.dsl.iad.megapath.net
64.32.217.132	A+PTR	ip-64-32-217-132.dsl.iad.megapath.net
64.32.217.135	A+PTR	ip-64-32-217-135.dsl.iad.megapath.net
64.32.217.136	A+PTR	ip-64-32-217-136.dsl.iad.megapath.net
64.32.217.138	A+PTR	ip-64-32-217-138.dsl.iad.megapath.net
64.32.217.139	A+PTR	ip-64-32-217-139.dsl.iad.megapath.net
64.32.217.144	A+PTR	ip-64-32-217-144.dsl.iad.megapath.net
64.32.217.151	A+PTR	ip-64-32-217-151.dsl.iad.megapath.net
64.32.217.152	A+PTR	ip-64-32-217-152.dsl.iad.megapath.net
64.32.217.153	A+PTR	ip-64-32-217-153.dsl.iad.megapath.net
64.32.217.158	A+PTR	ip-64-32-217-158.dsl.iad.megapath.net
64.32.217.161	A+PTR	ip-64-32-217-161.dsl.iad.megapath.net
64.32.217.165	A+PTR	ip-64-32-217-165.dsl.iad.megapath.net
64.32.217.169	A+PTR	ip-64-32-217-169.dsl.iad.megapath.net
64.32.217.170	A+PTR	ip-64-32-217-170.dsl.iad.megapath.net
64.32.217.171	A+PTR	ip-64-32-217-171.dsl.iad.megapath.net
64.32.217.179	A+PTR	ip-64-32-217-179.dsl.iad.megapath.net
64.32.217.181	A+PTR	ip-64-32-217-181.dsl.iad.megapath.net
64.32.217.185	A+PTR	ip-64-32-217-185.dsl.iad.megapath.net
64.32.217.197	A+PTR	ip-64-32-217-197.dsl.iad.megapath.net
64.32.217.202	PTR	dtstree.com
64.32.217.203	A+PTR	ip-64-32-217-203.dsl.iad.megapath.net
64.32.217.204	A+PTR	ip-64-32-217-204.dsl.iad.megapath.net
64.32.217.209	A+PTR	ip-64-32-217-209.dsl.iad.megapath.net
64.32.217.213	A+PTR	ip-64-32-217-213.dsl.iad.megapath.net
64.32.217.229	A+PTR	ip-64-32-217-229.dsl.iad.megapath.net
64.32.217.230	A+PTR	ip-64-32-217-230.dsl.iad.megapath.net
64.32.217.235	A+PTR	ip-64-32-217-235.dsl.iad.megapath.net
64.32.217.235	A	risc-ebusiness.net
64.32.217.235	A	fogartyfamily.org
64.32.217.236	A+PTR	ip-64-32-217-236.dsl.iad.megapath.net
64.32.217.239	A+PTR	ip-64-32-217-239.dsl.iad.megapath.net
64.32.217.248	A+PTR	ip-64-32-217-248.dsl.iad.megapath.net
64.32.217.250	A+PTR	ip-64-32-217-250.dsl.iad.megapath.net
64.32.217.253	A+PTR	ip-64-32-217-253.dsl.iad.megapath.net
64.32.218.20	PTR	hit-inc.net
64.32.218.20	A	filter.mglawkc.com
64.32.218.20	A	filter.mccollumgriggslaw.com
64.32.218.218	PTR	ip-64-32-218-218.iad.megapath.net
64.32.219.24	A+PTR	ip-64-32-219-24.nyc.megapath.net
64.32.219.142	A	ip-64-32-219-142.nyc.megapath.net
64.32.219.190	A	bustingrocks.com
64.32.219.190	A	a.mx.maralina.com
64.32.219.190	A	maralina.com
64.32.219.197	A+PTR	ip-64-32-219-197.nyc.megapath.net