Reverse Global

Beta

Reverse a latitude/longitude to an address.

OpenAPI reference
GEThttps://api.pro6pp.nl/v2/reverse/global

Overview

Returns the address at a lat/lng coordinate.

The country is resolved from the coordinate, so the administrative fields in the response are the ones that country publishes. The response schema lists them per country, and the examples show a street and a street-number result for each.

Note: the GB country code denotes the United Kingdom (ISO 3166-1 GB). Address data coverage is currently limited to England; Scotland, Wales and Northern Ireland are not yet included and will be added as coverage expands.

ParametersQuery string

authKeystringRequired

Every request needs an API key, which you can get in the portal.

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

latnumberRequired

The latitude.

Example
52.36691
lngnumberRequired

The longitude.

Example
4.89489
precisionstring

The precision to search either street or streetnumber

Example
street
Values
streetstreetnumber

Responses

200Address found
FieldTypeExample valueDescription
countrystring"Netherlands"

English name of the country: "Netherlands".

latnumber53.21358

Latitude of the address found, or of a central point of the street at street precision, in WGS84 decimal degrees rounded to five decimals.

lngnumber6.56172

Longitude of the address found, or of a central point of the street at street precision, in WGS84 decimal degrees rounded to five decimals.

municipalitystring"Groningen"

The municipality (gemeente) the result lies in.

postcodesarray of string["9711AA"]

At street precision every postal code on the street, sorted; at streetnumber precision the postal code of the address found.

provincestring"Groningen"

The province (provincie) the result lies in.

settlementstring"Groningen"

The BAG place of residence (woonplaats) the result lies in.

streetstring"Praediniussingel"

The name of the street found.

streetnumberstring"1"

House number of the address found with its premise appended, such as "4A"; present only at streetnumber precision.

Example response
{
  "country": "Netherlands",
  "lat": 53.21358,
  "lng": 6.56172,
  "municipality": "Groningen",
  "postcodes": [
    "9711AA"
  ],
  "province": "Groningen",
  "settlement": "Groningen",
  "street": "Praediniussingel",
  "streetnumber": "1"
}

Errors

Fields of an error response
FieldTypeDescription
error_idstring

The reason the request failed, such as INVALID_VALUE. The response lists the reasons this operation returns.

errorsarray of object

One entry per problem found in the request.

errors[].messagestring

A readable explanation of the problem, in English.

errors[].helpstring

A link to the documentation section that covers the problem.

errors[].parameterany

The parameter the problem is about. Usually its name; a list when several parameters are involved, or a name with the values to choose from when the request must select one.

errors[].valueany

The value the request sent for parameter, when it has one.

400Bad request
MISSING_PARAMETER

A parameter that other parameters depend on is missing. errors has one entry per missing parameter.

MISSING_PARAMETER
{
  "error_id": "MISSING_PARAMETER",
  "errors": [
    {
      "message": "Required parameter lat is missing",
      "help": "https://pro6pp.nl/docs/v2/redoc",
      "parameter": "lat"
    }
  ]
}
INVALID_PARAMETER_TYPE

A value has the wrong type, such as text for a number.

INVALID_PARAMETER_TYPE
{
  "error_id": "INVALID_PARAMETER_TYPE",
  "errors": [
    {
      "message": "parameter: lat has invalid 1,0, should be number",
      "help": "https://pro6pp.nl/docs/v2/redoc",
      "parameter": "lat"
    }
  ]
}
INVALID_VALUE

A required parameter is missing, or a value is malformed, out of bounds or cannot be found.

INVALID_VALUE
{
  "error_id": "INVALID_VALUE",
  "errors": [
    {
      "message": "value is invalid",
      "help": "https://pro6pp.nl/docs/v2/redoc",
      "parameter": "postalCode",
      "value": "invalid"
    }
  ]
}
401Unauthorized
UNAUTHORIZED

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.

UNAUTHORIZED
{
  "error_id": "UNAUTHORIZED",
  "errors": [
    {
      "message": "No authorization token provided",
      "help": "https://pro6pp.nl/docs/v2/redoc#section/Authentication"
    }
  ]
}
BAD_SUBSCRIPTION_TYPE

The coordinates lie in a country the subscription does not include.

BAD_SUBSCRIPTION_TYPE
{
  "error_id": "BAD_SUBSCRIPTION_TYPE",
  "errors": [
    {
      "message": "['LU', 'FR'] reverse API calls are not available for this subscription type. Please upgrade your subscription to add extra country support.",
      "help": "https://pro6pp.nl/docs/v2/redoc#operation/public_api.v2.reverse.worldwide.api.handler"
    }
  ]
}
OUTSIDE_SERVICE_AREA

The coordinates lie outside every supported country.

OUTSIDE_SERVICE_AREA
{
  "error_id": "OUTSIDE_SERVICE_AREA",
  "errors": [
    {
      "message": "This lat/lng combination is outside of our service area",
      "help": "https://pro6pp.nl/docs/v2/redoc#operation/public_api.v2.reverse.worldwide.api.handler"
    }
  ]
}
404No result
NO_RESULTS_FOUND

No result matches the parameters the request sent.

NO_RESULTS_FOUND
{
  "error_id": "NO_RESULTS_FOUND",
  "errors": [
    {
      "message": "No results found",
      "help": "https://pro6pp.nl/docs/v2/redoc"
    }
  ]
}

Code examples

curl "https://api.pro6pp.nl/v2/reverse/global?lat=52.36691&lng=4.89489&authKey=YOUR_API_KEY"

We encourage you to request example code in the language you prefer.

Step by step

Set up a quick form to try out the Global Reverse functionality by following the steps below.

  1. Build the HTML page

    We start by creating an empty HTML page, containing a minimal web page structure. Create a new .html file named pro6pp_global_reverse.html. Add the following code between the <body> and </body> tags. It adds the input fields for entering the address.

    pro6pp_global_reverse.html
    <form class="form" id="form">
      <div>Call</div>
      <div>
        <label for="lat">lat:</label>
        <input id="lat" class="lat" placeholder="52.36691"/>
        <label for="lng">lng:</label>
        <input id="lng" class="lng" placeholder="4.89489"/>
        <label for="precision">precision:</label>
        <input id="precision" class="precision" placeholder=""/>
      </div>
      <div>
        <span style="color: red" class="message"></span>
      </div>
      <div>
        <button type="submit">Submit</button>
      </div>
      <br />
      <div>Response</div>
      <br />
      <div>Full Response</div>
      <pre class="jsonResponse"></pre>
    </form>
  2. Add interaction

    Add the following JavaScript code in a separate pro6pp_global_reverse.js file. The IDs and Class names of the HTML elements should match with the ones specified in this JavaScript file in order to get the correct results.

    pro6pp_global_reverse.js
    document.addEventListener("DOMContentLoaded", function() {
        const pro6ppAuthKey = "AUTH_KEY"; // Replace with your actual authorization key
    
        let messageSpan = document.querySelector(".message");
        let jsonResponseSpan = document.querySelector(".jsonResponse");
        const BASE_URL = "https://api.pro6pp.nl/v2";
    
        function fetchAddress(authKey) {
            const queryParams = {
                lat: document.getElementById("lat").value,
                lng: document.getElementById("lng").value,
                authKey: authKey
            };
            const optionalQueryParams = [
                "precision",
            ];
            for (const name of optionalQueryParams) {
                const value = document.getElementById(name).value;
                if (value !== "") {
                    queryParams[name] = value;
                }
            }
    
            let encodedUrl = new URL(`${BASE_URL}/reverse/global`);
            encodedUrl.search = new URLSearchParams(queryParams);
    
            fetch(encodedUrl)
                .then(async (response) => {
                    const data = await response.json();
                    if (data) {
                        messageSpan.textContent = "";
                        jsonResponseSpan.textContent = JSON.stringify(data, null, 2);
                    }
                })
                .catch((error) => {
                    console.error("Error fetching: ", error);
                    messageSpan.textContent = error.message;
                });
        }
    
        const form = document.getElementById("form");
        form.onsubmit = function (event) {
            event.preventDefault();
            fetchAddress(pro6ppAuthKey);
        }
    });
  3. Make it work

    Link the JavaScript file inside the pro6pp_global_reverse.html right before closing the </body> tag.

    pro6pp_global_reverse.html
      ...
      <script src="pro6pp_global_reverse.js"></script>
     </body>
    </html>

    To access the Pro6PP web service, you need to request your personal authorization key. This key is emailed to you right after signing up. Replace the above placeholder AUTH_KEY with your personal authorization key.

    If you don’t have an account yet, sign up for a free 2-month trial. After creating your account, go to your Subscription details and copy your AUTH_KEY. You’ll need this key to authenticate your requests.

  4. See it in action

    Once you’ve completed the previous steps, it’s time to run the form locally in your browser. You should now have two files in the same folder on your computer:

    • pro6pp_global_reverse.html - the HTML page with the form.
    • pro6pp_global_reverse.js - the JavaScript file that handles the interaction.

    You can now open the HTML file in your browser by simply double-clicking it in your file explorer (e.g., Finder on macOS or File Explorer on Windows). Alternatively, you can open it manually in the browser using the full file:/// path. For example:

    Example file paths
    file:///C:/Users/YourName/Documents/pro6pp_global_reverse.html
    file:///Users/yourname/Desktop/pro6pp_global_reverse.html

    Once the page opens, start typing in the form fields and hit Submit to see the API response displayed in the “Full Response” section.