On 29 May 2014, at 09:14, Rohan McLeod <rhn@jeack.com.au> wrote:

   But how long before all 2^32  =  4.29 x 10 ^9 IPv4 addresses are
   gone ?

http://www.potaroo.net/tools/ipv4/

different regions will run out at different times. APNIC has one of the better policies for allocating the last drips,
while ARIN seems to be going out in a blaze of glory