The full list of countries where the Live service is supported can be found HERE
however the code cannot be activated in Romania and Cyprus.Note!
Xbox Live Card will extend your Gold subscription for 12 months. You may not be able to use this code if your subscription has 30 or less days left. We advise to wait until your subscription expires and then use the code.Xbox Live Memberships
have to be redeemed by PC, in order to activate code visit http://www.xbox.com/redeemcode