I think we'd be surprised how much address space is actually wasted, not announced or routed. I have my own /24 that I registered back in the 90's. It is, in f

I think we'd be surprised how much address space is actually wasted, not announced or routed. I have my own /24 that I registered back in the 90's. It is, in fact, routed and announced globally. I know several "early Internet" nerds with the same. I know three local companies with /16's that aren't even announcing their blocks! Perhaps they use them internally.