2. In the top menu, select the country to query from the drop-down menu of the state to open the postal code query page of that country.

3. Enter the name (English) or postal code of the city to be queried (spaces in postal code must be entered), and click Query. The detailed information to be queried is as follows.

4. In addition to inquiring about foreign postal codes, it is also convenient to inquire about domestic postal codes and addresses.