Android : How To Open Android Keypad to AlphaNumeric with Numbers on Top?

I am trying to find the appropriate input method to get an android application to open up to the keypad which has the numbers at the top and alpha at the bottom. We are entering registration numbers which typically begin with a numeric value but are then followed by an alpha portion so it would be great if it would open to number first.

I have tried android:inputType="Number" and android:inputType="Text"