Zip/ Postal code validation

[siomosp]

Hi,

i want to check zip / postal code against a table at prestashop database , eg ps_retricted_zips ( manually added)

If the entered code exists at database , a message*  is displayed at customer
If not exist,  no action

Any ideas if/ how it can be done?
PS version  1.7.5
"The Checkout" one page checkout module installed

*example message

Info! 
Your address considered distant, 
please select cod payment , 
or you have to receive the 
parcel from the nearest city

 

[Ress]

You could do this check in the checkZipCode method of the Country class.