Robtex

Up: 189.216.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 189.216.232.0/22
Down right: 189.216.236.0/22

IP	Type	Hostname
189.216.233.170	PTR	customer-189-216-233-170.cablevision.net.mx
189.216.238.1	PTR	customer-189-216-238-1.cablevision.net.mx
189.216.238.10	PTR	customer-189-216-238-10.cablevision.net.mx
189.216.238.16	PTR	customer-189-216-238-16.cablevision.net.mx
189.216.238.33	PTR	customer-189-216-238-33.cablevision.net.mx
189.216.238.48	PTR	customer-189-216-238-48.cablevision.net.mx
189.216.238.57	PTR	customer-189-216-238-57.cablevision.net.mx
189.216.238.59	PTR	customer-189-216-238-59.cablevision.net.mx
189.216.238.64	PTR	customer-189-216-238-64.cablevision.net.mx
189.216.238.72	PTR	customer-189-216-238-72.cablevision.net.mx
189.216.238.75	PTR	customer-189-216-238-75.cablevision.net.mx
189.216.238.121	PTR	customer-189-216-238-121.cablevision.net.mx
189.216.238.122	PTR	customer-189-216-238-122.cablevision.net.mx
189.216.238.128	PTR	customer-189-216-238-128.cablevision.net.mx
189.216.238.129	PTR	customer-189-216-238-129.cablevision.net.mx
189.216.238.138	PTR	customer-189-216-238-138.cablevision.net.mx
189.216.238.145	PTR	customer-189-216-238-145.cablevision.net.mx
189.216.238.153	PTR	customer-189-216-238-153.cablevision.net.mx
189.216.238.155	PTR	customer-189-216-238-155.cablevision.net.mx
189.216.238.160	PTR	customer-189-216-238-160.cablevision.net.mx
189.216.238.163	PTR	customer-189-216-238-163.cablevision.net.mx
189.216.238.184	PTR	customer-189-216-238-184.cablevision.net.mx
189.216.238.224	PTR	customer-189-216-238-224.cablevision.net.mx
189.216.238.233	PTR	customer-189-216-238-233.cablevision.net.mx
189.216.238.250	PTR	customer-189-216-238-250.cablevision.net.mx
189.216.239.178	PTR	customer-189-216-239-178.cablevision.net.mx