Every request needs an API key, which you can get in the [portal](/portal).

When you call the API from a browser, visitors can see your API key. Limit it to your own domains in the [portal](/portal), or send the requests through your own server so the key stays hidden.


authKey

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

Returns the distance between a start and a destination postcode. With the `road` algorithm the distance is over the road in meters and includes the car drive time in minutes.

Both postcodes must use the same format, 4 digits or 6 digits. The 6-digit format works up to 5000 m; use the 4-digit format for longer distances.


A sixpp or a fourpp to start calculating from.


fromPostalCode

toPostalCode

Specifies the algorithm for calculating distance and time.

Available Algorithms:
* `straight`: Calculates the distance in a straight line.
* `road`: Calculates the actual traveling distance and time using the drive time matrix (shortest route) over the actual road network.
    * Availability of `road` depends on your subscription level.
    * For trial purposes, this algorithm can be used with any subscription level for the following postcode ranges:
        * `1000-1098`, `1100-1108` (Amsterdam)
        * `3000-3089` (Rotterdam)
        * `5600-5658` (Eindhoven)


algorithm

A postal code is missing, malformed or cannot be found, or `algorithm` is not `straight` or `road`.

The request is rejected; `error_id` names the reason.


The API key is missing, unknown, revoked or expired, its subscription is not active, the request does not match the key's allowlist, or the subscription does not include this call.

The request is not authorized; `error_id` names the reason.


Return driving distance and time between two Dutch postcodes.

Distance Pays-Bas Paramètres