It should be possible but you're ping is probably gonna be somewhere in the 100 range. It isn't TOO bad like most Brs' ping we see nowadays.
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CrossFire NA has IP Restrictions over most parts of Europe. CF EU has IP Restrictions over all parts of North America. You could use a proxy, but I wouldn't recommend it. It's better to play with your region supported game. Not another version where you don't have offered service.