Robtex

Up: 66.78.208.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.78.216.0/22
Down right: 66.78.220.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.78.216.0	PTR	dccc-66-78-216-0.smartcity.com
66.78.217.70	A	dccc-66-78-217-70.smartcity.com
66.78.217.133	A	dccc-66-78-217-133.smartcity.com
66.78.217.140	A	gw5-dccc.smartcity.com
66.78.218.2	A+PTR	dccc-66-78-218-2.smartcity.com
66.78.218.16	A+PTR	dccc-66-78-218-16.smartcity.com
66.78.218.16	A	wcsa.com
66.78.218.16	A	www.wcsa.com
66.78.218.33	PTR	dccc-66-78-218-33.smartcity.com
66.78.218.33	A	oldmail.dcsec.com
66.78.218.33	A	eventsdc.com
66.78.218.35	PTR	dccc-66-78-218-35.smartcity.com
66.78.218.56	A	dccc-66-78-218-56.smartcity.com
66.78.218.132	A	dccc-66-78-218-132.smartcity.com
66.78.218.146	A	dccc-66-78-218-146.smartcity.com
66.78.219.201	A	dccc-66-78-219-201.smartcity.com
66.78.220.2	A+PTR	dccc-66-78-220-2.smartcity.com
66.78.220.7	A	dccc-66-78-220-7.smartcity.com
66.78.220.24	A	dccc-66-78-220-24.smartcity.com
66.78.220.28	A	dccc-66-78-220-28.smartcity.com
66.78.220.115	A	dccc-66-78-220-115.smartcity.com
66.78.220.230	A	dccc-66-78-220-230.smartcity.com
66.78.221.1	A	dccc-66-78-221-1.smartcity.com
66.78.221.5	A	dccc-66-78-221-5.smartcity.com
66.78.221.7	A	dccc-66-78-221-7.smartcity.com
66.78.221.22	A	dccc-66-78-221-22.smartcity.com
66.78.221.37	A	dccc-66-78-221-37.smartcity.com
66.78.221.59	A	dccc-66-78-221-59.smartcity.com
66.78.221.66	A	dccc-66-78-221-66.smartcity.com
66.78.221.115	A	dccc-66-78-221-115.smartcity.com
66.78.221.137	A	dccc-66-78-221-137.smartcity.com
66.78.221.157	A	dccc-66-78-221-157.smartcity.com
66.78.221.166	A	dccc-66-78-221-166.smartcity.com
66.78.221.173	A	dccc-66-78-221-173.smartcity.com
66.78.221.197	A	dccc-66-78-221-197.smartcity.com
66.78.221.199	A	dccc-66-78-221-199.smartcity.com
66.78.221.210	A	dccc-66-78-221-210.smartcity.com
66.78.221.214	A	dccc-66-78-221-214.smartcity.com
66.78.221.252	A	dccc-66-78-221-252.smartcity.com
66.78.221.254	A	dccc-66-78-221-254.smartcity.com
66.78.223.153	A	dccc-66-78-223-153.smartcity.com
66.78.223.160	PTR	dccc-66-78-223-160.smartcity.com
66.78.223.164	A	dccc-66-78-223-164.smartcity.com