Robtex

Up: 166.210.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 166.210.192.0/20
Down right: 166.210.208.0/20

IP	Type	Hostname
166.210.194.64	PTR	unassigned.cell
166.210.197.97	PTR	unassigned.cell
166.210.213.225	PTR	unassigned.cell
166.210.214.1	PTR	unassigned.cell
166.210.214.65	PTR	unassigned.cell
166.210.214.66	PTR	unassigned.cell
166.210.214.245	PTR	unassigned.cell
166.210.214.247	PTR	unassigned.cell
166.210.217.141	PTR	unassigned.cell
166.210.217.162	PTR	unassigned.cell
166.210.218.106	PTR	unassigned.cell
166.210.218.132	PTR	unassigned.cell
166.210.221.67	PTR	unassigned.cell
166.210.221.71	PTR	unassigned.cell