Asians and those in North America are going to be separated on the internet if ISPs / telecoms don't do something. European progress to IPv6 is taking place much faster than in North America. What solutions are available today, and what is being developed? Especially in North America.
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Everyone is still using IPv4 addresses, for any common use on the Internet. The person in Japan will have contracted with an ISP there, and would have been assigned an IPv4 address from the pool of available addresses for that ISP. The address blocks may have been fully assigned to ISPs, but that doesn't mean that the ISPs have fully assigned all their addresses to customers.
It should be noted that IPv6 migration is a complicated issue, and parties from all nationalities are working on the problem, including Americans.