How to use

API keys are unique codes that identify you or your application each time you make a call to one of our API’s.

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You can find sample request with dummy input and output in the documentation tab. There you can preview the input and output responses from the APIs.

In order to receive real (non-dummy) data output you will need a production account. After registration you will be given personalized login credentials and receive further instructions to activate your product account.

Do you already have a contract to access API’s from either Cendris or Data Services by PostNL (both wholly owned by PostNL)? Please contact your Account Manager.

Get familiar with our API documentation. The detail essential information common to all of our services. You need to be aware of these conventions before integrating any of our services.

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Webservice to enrich a Dutch address with geographical coordinates. Enrich address data while it is entered.

Simply use the API to enrich address data that is entered in your webshop or CRM.

The Geo Adrescheck Nationaal is available in 1 form to implement the address verification in your tooling (webform, CRM etc).

The following method is defined within the Geo Adrescheck Nationaal.

1. General format (send any of a list of pre-defined fields). You can opt to require users to fill in a complete address (with all pre-defined fields that make up an address) or choose to choose a subset of fields.

Unique Dutch addresses can be found based on the PostalCode+HouseNumber+Addition (dependant on the existence of an Addition in the HouseNumber range) or Street+HouseNumber+Addition+City. It can be attractive to use on of these subsets insteads of requiring users to fill out a complete address format.
To reduce the amount of fields the single line method can be, depending on your preference, even more attractive.

More detailed information on the method can be found in the documentation section.