This is the Authorization key. You have to add it as a GET parameter.
Your auth key can be found on the [CMS](https://www.pro6pp.nl/cms).


authKey

This will give autocomplete suggestions for Luxembourg
streetnumber and premise (extension/addition).

Only the `street` parameter is required but a call must contain at least one of the following parameters:
* `postalCode`
* `settlement`

A request cannot be only a streetNumberAndPremise


The address's postal code which can be up to four digits long


postalCode

Luxembourg postalCode

The address's settlement (city, town, village)


settlement

street

The address's streetnumber and premise (extension/addition)


streetNumberAndPremise

The amount of results returned, a number between 0 and 999.


maxResults

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