Carrier choice according to ZIP code

[Kalkarn]

Hi,

 

I am currently working on a 1.5.2.0 prestashop website, and in the carrier choice, I'm offering to choose between regular delivery and courier for one ZIPcode (since they only cover this one), and regular to all others.

The problem is that a customer away from this ZIPcode still can select the courier option even if they are not in the area covered.

Is there a way to have the choice when the customer's adress is in this area, and to only have the regular carrier if they are in another area?

 

I don't know if I'm expressing myself correctly, sorry if it isn't the case.

 

Thanks in advance,

 

Kalkarn