[ppml] My view on IPv4 (was: Re: IPv4 wind-down)

- it's unfair that more than 50% of all IPv4 address space is held by  
US entities which then get to make a lot of money from them, while  
the developing world holds next to no address space and would have to  
buy it from richer countries

Can anybody document the 50% figure?  When I go to:
 http://www.arin.net/statistics/jointstats.pdf

It looks to me like ARIN has only assigned about 30% of the allocated
IPv4 space.