The cdkey is 16 digit ( sample: R8DW-7FKM-F268-GTHM) and it can NOT be converted to 26 digit cdkeys. However, if you don't care about the registration of the cdkeys, you are still able to play the game on any online server (US East, US West, Europe, Asia) with this kind of cdkeys without any problem at all. So you can NOT register this kind of CD-key(s) on the official website ().
Non-USA version cdkeys are NOT from US sources and have already been registered under the name of one of Blizzard's Asian distributors.
