Does any cell phone carrier allow mutliple area codes under one calling plan?

I signed up under AT%26amp;T (back before they sold their wireless business to Cingular) with California area codes. I added a third line with a FLORIDA area code - no sweat!. Now, years later, it appears AT%26amp;T/Cingular, Verizon, and T-Mobile won't do that anymore. I can't be tied to these sim cards forever - but I don't want to make the owner of the third cell phone to have to change to a non-Florida area code.Does any cell phone carrier allow mutliple area codes under one calling plan?
No