The last of North America’s IPv4 addresses has been allocated from the “free pool”, the body responsible for allocating internet protocol addresses in North America, the American Registry for Internet Numbers (ARIN) announced.There are addresses that will continue to become available, and ARIN will continue to process and approve requests for IPv4 address blocks. Those approved requests may be fulfilled via the Wait List for Unmet IPv4 Requests, or through the IPv4 Transfer Market.On the transfer market, there are reports that IPv4 addresses have been selling for $10-12 each according to IDG.But the depletion of IPv4 addresses is spurring on IPv6 adoption. The latest State of the Internet report from Akamai shows that in the second quarter of 2015 “reversing the trend seen in the first quarter, the number of unique IPv4 addresses worldwide connecting to Akamai dropped by about 8.6 million in the second quarter. Six of the top 10 countries saw a quarterly decline in unique IPv4 address counts in the second quarter, compared with three in the previous quarter.”On IPv6 growth, the report shows “European countries continued to dominate the 10 countries/regions with the largest percentage of content requests made to Akamai over IPv6 in the second quarter of 2015. Similar to previous quarters, Belgium maintained its clear lead, with 38% of content requests being made over IPv6. Switzerland (23%) saw the largest increase, enjoying a 168% jump over the previous quarter, moving into second place globally, with nearly a quarter of content requests coming over IPv6. As with the previous quarter, the only two non-European counties among the top 10 were the U.S. and Peru, both of which saw significant double-digit quarterly improvements to adoption rates of 19% and 17%, respectively.”Further, BT announced that by the end of 2016 its entire network will be able to use IPv6 according to BBC News and in India, the Kerala government has rolled out a roadmap to implement Internet Protocol version 6 (IPv6) across the state, reported the Financial Express.