Robtex

Up: 186.122.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 186.122.72.0/22
Down right: 186.122.76.0/22

IP	Type	Hostname
186.122.72.50	PTR	host50.186-122-72.telmex.net.ar
186.122.72.54	PTR	host54.186-122-72.telmex.net.ar
186.122.73.183	PTR	host183.186-122-73.telmex.net.ar
186.122.77.61	PTR	host61.186-122-77.telmex.net.ar
186.122.77.150	PTR	host150.186-122-77.telmex.net.ar