Reduce the list, select first 2 letters of the city:
Listing cities (27 place(s)). Select the City to see the postcode(s):
Listing cities (27 place(s)). Select the City to see the postcode(s):
Position: Postcodes > Vietnam > Quảng Ninh > D.... >
Postcode finder: Vietnam, List of the cities starting with D. Vietnam Quảng Ninh Postcodes (Desktop version).