Robtex

Up: 174.64.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 174.64.40.0/23
Down right: 174.64.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
174.64.40.0	PTR	voip174-64-40-0.mm.br.br.cox.net
174.64.40.7	A+PTR	wsip-174-64-40-7.ri.ri.cox.net
174.64.40.39	A+PTR	wsip-174-64-40-39.ri.ri.cox.net
174.64.40.46	A+PTR	wsip-174-64-40-46.ri.ri.cox.net
174.64.40.61	A+PTR	wsip-174-64-40-61.ri.ri.cox.net
174.64.40.72	A+PTR	wsip-174-64-40-72.ri.ri.cox.net
174.64.40.96	A+PTR	wsip-174-64-40-96.ri.ri.cox.net
174.64.40.106	A+PTR	wsip-174-64-40-106.ri.ri.cox.net
174.64.40.227	A+PTR	wsip-174-64-40-227.ri.ri.cox.net
174.64.40.232	A+PTR	wsip-174-64-40-232.ri.ri.cox.net
174.64.40.239	A+PTR	wsip-174-64-40-239.ri.ri.cox.net
174.64.41.25	A+PTR	wsip-174-64-41-25.ri.ri.cox.net
174.64.41.37	A+PTR	wsip-174-64-41-37.ri.ri.cox.net
174.64.41.59	A+PTR	wsip-174-64-41-59.ri.ri.cox.net
174.64.41.171	A+PTR	wsip-174-64-41-171.ri.ri.cox.net
174.64.41.193	A+PTR	wsip-174-64-41-193.ri.ri.cox.net
174.64.41.232	A+PTR	wsip-174-64-41-232.ri.ri.cox.net
174.64.42.26	A+PTR	wsip-174-64-42-26.ri.ri.cox.net
174.64.42.45	A+PTR	wsip-174-64-42-45.ri.ri.cox.net
174.64.42.80	A+PTR	wsip-174-64-42-80.ri.ri.cox.net
174.64.42.80	A	seapowet.com
174.64.42.80	A	clipboardinc.com
174.64.42.140	A+PTR	wsip-174-64-42-140.ri.ri.cox.net
174.64.42.145	A+PTR	wsip-174-64-42-145.ri.ri.cox.net
174.64.42.160	A+PTR	wsip-174-64-42-160.ri.ri.cox.net
174.64.42.208	A+PTR	wsip-174-64-42-208.ri.ri.cox.net
174.64.42.236	A+PTR	wsip-174-64-42-236.ri.ri.cox.net
174.64.43.8	A+PTR	wsip-174-64-43-8.ri.ri.cox.net
174.64.43.38	PTR	wsip-174-64-43-38.ri.ri.cox.net
174.64.43.51	A+PTR	wsip-174-64-43-51.ri.ri.cox.net
174.64.43.62	A+PTR	wsip-174-64-43-62.ri.ri.cox.net
174.64.43.64	A+PTR	wsip-174-64-43-64.ri.ri.cox.net
174.64.43.133	A+PTR	wsip-174-64-43-133.ri.ri.cox.net
174.64.43.140	A+PTR	wsip-174-64-43-140.ri.ri.cox.net
174.64.43.172	A+PTR	wsip-174-64-43-172.ri.ri.cox.net
174.64.43.220	A+PTR	wsip-174-64-43-220.ri.ri.cox.net
174.64.43.244	PTR	wsip-174-64-43-244.ri.ri.cox.net
174.64.43.244	A	paulhallaway.com
174.64.43.244	A	phallaway.com
174.64.43.255	PTR	voip174-64-43-255.mm.br.br.cox.net