The API key is required for all requests and must be included as a query parameter named `authKey`. You can obtain your API key from the [portal](/portal).


authKey

Deduce a complete or probable address based on incomplete, ambiguous, or partial input.

This will give autocomplete suggestions for Belgian postal codes.


The partial postalCode contains at least 1 digit.


postalCode

Partial postalCode

The amount of results returned, a number between `0` and `999`. Default value is `10`.


maxResults

The page to return, the variables for the next/previous pages can be found in the results Link header.


Suggest Belgium Postal code Step by step