How to Validate International Zip Codes

In order to validate an international zip code, you need to know its format. For example, an American address must include a state code, while an international address should contain a city and state. The format of the state code will be different, depending on the country. In the case of Mexico, the code will have a country-specific pattern, which is different from the pattern for U.S. addresses.

There are various ways to validate international postal codes. The first method is to use a regex to determine whether a postal code contains a specific country. Postal codes do not have a general pattern, but they usually consist of combinations of letters and numbers. These codes can contain dots or spaces, and they range from two to six characters long. It is not practical to create separate regexes for each country, as this would leave the validation out.

If you use an open format regex to validate an international zip code, you can use it to replace STRNG_LTN_EXT_255. However, this process may take some time, so be patient and use the best tool you can. You can also use a standardized international ZIP code format. This will help you avoid errors when you are using an international zip code.

If you need to validate international zip codes for your business, you may want to use FedEx's Postal Code Validation API. This API will validate postal codes from countries, cities, and countries, and then return the verified postal details. This method can reduce shipping delays and ensure that you don't waste resources on invalid postal codes.