I'm trying to unlock the subsidy code on my motorola razr v3?

First, dial on the phone *#06# like you are going to call someone. This should reveal a code called the IMEI. Write it down, then call AT&T either by 611 from the phone or 800.331.0500 and provide them with the IMEI. Then, they will give you the unlocking code and walk you through how to put it in.

Hope this helps. :)