Pin code 403703
What 403703 tells you
The first digit, 4, is the postal zone. The first two digits, 40, are the postal circle. The first three, 403, are the sorting district, and 703 identifies the delivery office.
The first digit, 4, is the postal zone. The first two digits, 40, are the postal circle. The first three, 403, are the sorting district, and 703 identifies the delivery office.