Robtex

Up: 64.32.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.32.192.0/23
Down right: 64.32.194.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.32.192.21	A+PTR	ip-64-32-192-21.iad.megapath.net
64.32.192.29	PTR	ip-64-32-192-29.iad.megapath.net
64.32.192.32	A+PTR	ip-64-32-192-32.iad.megapath.net
64.32.192.35	A	ip-64-32-192-35.iad.megapath.net
64.32.192.50	PTR	ip-64-32-192-50.iad.megapath.net
64.32.192.61	PTR	ip-64-32-192-61.iad.megapath.net
64.32.192.64	A+PTR	ip-64-32-192-64.iad.megapath.net
64.32.192.65	A+PTR	ip-64-32-192-65.iad.megapath.net
64.32.192.69	A+PTR	ip-64-32-192-69.iad.megapath.net
64.32.192.83	A+PTR	ip-64-32-192-83.iad.megapath.net
64.32.192.96	A+PTR	ip-64-32-192-96.iad.megapath.net
64.32.192.103	PTR	ip-64-32-192-103.iad.megapath.net
64.32.192.104	PTR	ip-64-32-192-104.iad.megapath.net
64.32.192.121	PTR	ip-64-32-192-121.iad.megapath.net
64.32.192.134	PTR	ip-64-32-192-134.iad.megapath.net
64.32.192.145	A+PTR	ip-64-32-192-145.iad.megapath.net
64.32.192.152	A+PTR	ip-64-32-192-152.iad.megapath.net
64.32.192.161	A+PTR	ip-64-32-192-161.iad.megapath.net
64.32.192.167	A+PTR	ip-64-32-192-167.iad.megapath.net
64.32.192.186	PTR	ip-64-32-192-186.iad.megapath.net
64.32.192.187	A+PTR	ip-64-32-192-187.iad.megapath.net
64.32.192.193	A+PTR	ip-64-32-192-193.iad.megapath.net
64.32.192.196	A	ip-64-32-192-196.iad.megapath.net
64.32.192.200	A+PTR	ip-64-32-192-200.iad.megapath.net
64.32.192.201	A+PTR	ip-64-32-192-201.iad.megapath.net
64.32.192.203	A	ip-64-32-192-203.iad.megapath.net
64.32.192.207	A	buicksuper.com
64.32.192.207	A	ezphilly.com
64.32.192.207	A	mail.ezphilly.com
64.32.192.214	PTR	ip-64-32-192-214.iad.megapath.net
64.32.192.216	A+PTR	ip-64-32-192-216.iad.megapath.net
64.32.192.217	A	ip-64-32-192-217.iad.megapath.net
64.32.192.229	A	ip-64-32-192-229.iad.megapath.net
64.32.192.245	PTR	ip-64-32-192-245.iad.megapath.net
64.32.193.31	A	ip-64-32-193-31.iad.megapath.net
64.32.193.93	A	ip-64-32-193-93.iad.megapath.net
64.32.193.97	A	ip-64-32-193-97.iad.megapath.net
64.32.193.106	A	ip-64-32-193-106.iad.megapath.net
64.32.193.138	PTR	ip-64-32-193-138.iad.megapath.net
64.32.193.152	A	mail.m-litigation.com
64.32.193.152	A	mail.paladin-law.com
64.32.193.154	A	ip-64-32-193-154.iad.megapath.net
64.32.193.164	PTR	attrition.org
64.32.193.207	A	ip-64-32-193-207.iad.megapath.net
64.32.194.101	A	ip-64-32-194-101.iad.megapath.net
64.32.194.114	A	ip-64-32-194-114.iad.megapath.net
64.32.194.125	A	ip-64-32-194-125.iad.megapath.net
64.32.194.128	A	ip-64-32-194-128.iad.megapath.net
64.32.194.138	A	ip-64-32-194-138.iad.megapath.net
64.32.194.152	A	ip-64-32-194-152.iad.megapath.net
64.32.194.165	A	ip-64-32-194-165.iad.megapath.net
64.32.194.175	A	ip-64-32-194-175.iad.megapath.net
64.32.194.184	PTR	ip-64-32-194-184.iad.megapath.net
64.32.194.186	A	ip-64-32-194-186.iad.megapath.net
64.32.194.203	A	ip-64-32-194-203.iad.megapath.net
64.32.194.208	PTR	ip-64-32-194-208.iad.megapath.net
64.32.194.219	A	ip-64-32-194-219.iad.megapath.net
64.32.194.223	A	ip-64-32-194-223.iad.megapath.net
64.32.194.244	A	ip-64-32-194-244.iad.megapath.net
64.32.195.6	PTR	rfdc03.rfcc.local
64.32.195.48	A	ip-64-32-195-48.iad.megapath.net
64.32.195.80	A+PTR	ip-64-32-195-80.iad.megapath.net
64.32.195.135	A+PTR	smtp.pkh.com
64.32.195.161	PTR	cube.mco77.com
64.32.195.161	A	mco77.com
64.32.195.161	A	mail.mco77.com
64.32.195.207	A	ip-64-32-195-207.iad.megapath.net
64.32.195.238	A	ip-64-32-195-238.iad.megapath.net