Robtex

Up: 189.217.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 189.217.152.0/22
Down right: 189.217.156.0/22

IP	Type	Hostname
189.217.153.247	PTR	customer-189-217-153-247.cablevision.net.mx
189.217.153.253	PTR	customer-189-217-153-253.cablevision.net.mx
189.217.153.253	A	montmar.mx
189.217.154.40	PTR	customer-189-217-154-40.cablevision.net.mx
189.217.155.249	PTR	customer-189-217-155-249.cablevision.net.mx
189.217.156.228	PTR	customer-189-217-156-228.cablevision.net.mx
189.217.158.170	PTR	customer-189-217-158-170.cablevision.net.mx
189.217.159.6	PTR	customer-189-217-159-6.cablevision.net.mx
189.217.159.71	PTR	customer-189-217-159-71.cablevision.net.mx
189.217.159.180	PTR	customer-189-217-159-180.cablevision.net.mx