User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-70.181.10.50-20121030222842/@comment-4212769-20121030231834

As they use now Nintendo's servers I'm not sure if they will be divided in zones. I think there is a decent chance it only doesn't include Japan. I can imagine that US/SAmerica/Europe/Australia use the same servers.