The difference between WC2 and D2 keys

[Eternal]

I wonder, can anyone tell me if there is a difference between WC2 and D2 keys? I need to be able to read a cdkey and distinguish which one it is (without connecting to test). They both seem to have the same number of characters and mix of numbers vs letters and I can't spot any 'patterns'.

[dxoigmn]

When you decode the cdkey, the program ids will be different for Warcraft II BNE/Diablo II/Diablo II LoD cdkeys. They are 4/6/10 respectively.

[Eternal]

OK, so is there no way of identifying it without decoding it?

[Adron]

OK, so is there no way of identifying it without decoding it?

Most probably not. Maybe you could find a pattern in the letters without decoding it. Obviously there is one since you can decode it and have a number fall out that gives you the answer. You'd be seriously wasting your time though since you could just decode it and have the answer.

[Eternal]

OK, thanks - you have answered my question. I'll modify my thinking to use the decoding already there.  

[EDIT] stupid typo.