Robtex

Up: 80.243.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 80.243.80.0/21
Down right: 80.243.88.0/21

IP	Type	Hostname
80.243.82.1	PTR	a80-243-82-1.cpe.netcabo.pt
80.243.85.2	PTR	a80-243-85-2.cpe.netcabo.pt
80.243.85.3	PTR	a80-243-85-3.cpe.netcabo.pt
80.243.85.19	PTR	a80-243-85-19.cpe.netcabo.pt
80.243.85.114	PTR	a80-243-85-114.cpe.netcabo.pt
80.243.85.144	PTR	a80-243-85-144.cpe.netcabo.pt
80.243.85.162	PTR	a80-243-85-162.cpe.netcabo.pt
80.243.85.208	PTR	a80-243-85-208.cpe.netcabo.pt
80.243.85.210	PTR	a80-243-85-210.cpe.netcabo.pt
80.243.85.211	PTR	a80-243-85-211.cpe.netcabo.pt
80.243.85.243	PTR	a80-243-85-243.cpe.netcabo.pt