Robtex

Up: 200.64.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 200.64.224.0/20
Down right: 200.64.240.0/20

IP	Type	Hostname
200.64.231.1	PTR	dup-200-64-231-1.prodigy.net.mx
200.64.231.3	PTR	dup-200-64-231-3.prodigy.net.mx
200.64.231.96	PTR	dup-200-64-231-96.prodigy.net.mx
200.64.231.98	PTR	dup-200-64-231-98.prodigy.net.mx
200.64.231.128	PTR	dup-200-64-231-128.prodigy.net.mx
200.64.231.129	PTR	dup-200-64-231-129.prodigy.net.mx
200.64.231.160	PTR	dup-200-64-231-160.prodigy.net.mx
200.64.231.161	PTR	dup-200-64-231-161.prodigy.net.mx
200.64.231.195	PTR	dup-200-64-231-195.prodigy.net.mx
200.64.231.224	PTR	dup-200-64-231-224.prodigy.net.mx
200.64.231.225	PTR	dup-200-64-231-225.prodigy.net.mx
200.64.240.130	PTR	dup-200-64-240-130.prodigy.net.mx