
## Expanded Developer Pages

Our developer pages have been improved. New: an information page per country, explaining the specific characteristics of the postal code system. This is essential for implementing our API correctly.

## New and Expanded Locator API Calls per Country

We’ve worked on parity: both `GET` and `POST` methods are now available for most countries. Newly added:

- /v2/locator/nl (POST)
- /v2/locator/lu (GET)
- /v2/locator/fr (GET)
- /v2/locator/de (GET)
- /v2/locator/dk (POST)

Additionally, we’ve improved the road network algorithm — there is no longer a 5 km limit in the Locator. `POST` methods allow sending larger datasets than `GET`.

## Introduction of pro6pp.com

In addition to [pro6pp.nl](https://pro6pp.nl), there is now [pro6pp.com](https://pro6pp.com), aimed at our international customers. This is part of a broader strategy around SEO and internationalization. We are happy to share our experiences with others looking to scale internationally. Let us know if you're interested.

## Call: Pro6PP Sounding Board Group

We're looking for active users who want to help shape the development direction of our API and datasets. This group meets twice a year to discuss new ideas, structural bottlenecks, and desired improvements.

**Interested?** Send a short email to [support@pro6pp.nl](mailto:support@pro6pp.nl). As a thank you, we offer extra credits and early access to new features.

## One Input Field for an Address

We're currently working on a new API call for smart input: one field where users can freely type an address, and the system automatically interprets and completes it. Examples:

- `Keizersgracht 123 Amsterdam`
- `123, AMS`

We'll start testing this with a small group of users from the sounding board group. If feedback is positive, we’ll scale up quickly.

## Depth in Data More Important than Number of Countries

Our focus is shifting from expanding to more countries to improving quality and depth. For example, the autocomplete API recently added the field `<b>plot_size</b>` (Netherlands only), available in 'Special' subscriptions where we combine multiple data sources.

A user suggested a data source for parcel size — it’s now integrated, allowing all users to request not just surface area but also parcel size. Keep sending your data suggestions.

## Your Input

We welcome your ideas and suggestions for new countries or API functions. Several users requested the United Kingdom — this is now in development.

The one input field feature also resulted from a previous newsletter poll, showing the value of continued user engagement through the sounding board group.

## Contact and More Information

We hope you're satisfied with our service. Feel free to reach out with any questions or feedback.

Best regards, **The Pro6PP Team**


Discover the Pro6PP updates and plans roundup for Spring 2025.

Noteworthy Pro6PP updates Spring 2025

Pro6PP has expanded its developer documentation with country-specific pages explaining postal code systems. New API endpoints have been added for several countries, supporting both GET and POST methods, and the Locator API no longer has a 5 km radius limit. A new international site, pro6pp.com, is now live alongside pro6pp.nl to support global users and SEO efforts. Pro6PP invites active users to join a sounding board group that meets twice a year to provide feedback on API and dataset development. Members receive extra credits and early access to features. A new API is in development to allow address input via a single free-text field (e.g., “Keizersgracht 123 Amsterdam”), starting with selected users. The company is shifting focus from expanding to more countries toward deepening data quality within existing ones—e.g., adding the `plot_size` field to the autocomplete API for the Netherlands.


A customer who has been using our Pro6PP service for over 12 years recently asked an interesting question, “What are the different functions that Dutch zip codes can have?” We will gladly take the opportunity to explain it to you.

# The versatile functions of a Dutch address or zip code

When you think of an address or postal code, its practical utility probably first comes to mind: finding a location or receiving mail. But did you know that a Dutch address or postal code performs many more functions? In this post, we explore the different roles an address or zip code has in our daily lives and why these little pieces of information can be so important.

## 1. Identification of locations & mail delivery

The best known and most widely used function of a zip code is to identify a specific location. Whether it is a home, a business or a government agency, an address allows one to precisely locate that place. This is essential, especially in areas where many buildings are close together. With a clearly defined address and zip code, anyone can quickly and easily find the right place, whether you are a visitor or a resident of the neighborhood.

Using the zip code, mail and packages can be delivered efficiently. Without these codes, it would be a lot harder for postal companies like PostNL to determine the destination of letters and packages. Zip codes allow them to sort the mail quickly and accurately, so your mail arrives faster and more reliably. This makes postal codes an indispensable part of our delivery system.

With the address validation [Autocomplete API](/en/developer/autocomplete/nl/parameters), never again will an order be delivered to the wrong address. Enter a zip code and house number and based on a zip code and house number, the suggest API searches for the correct address. The autocomplete API then checks the address and completes additional data.

## 2. Navigation

In the digital age, addresses and zip codes have become indispensable in navigation systems and maps. They help plan routes and find the right destination. Whether you commute daily, plan a road trip, or visit a tourist destination, the accuracy of addresses and zip codes makes navigation easy and reliable. Without them, we would often get lost in our own city or miss an important appointment.

The [location finder](/demo/distance/nl) API makes it possible to help you plan a route and find the right destination. In addition, it is possible to use the API to make various calculations, such as distance in a straight line or distance over the road but also the time it takes to drive an average car.

## 3. Administrative purposes

Governments and businesses rely heavily on addresses and zip codes for a wide range of administrative tasks. From tax collection and population registration to customer management an accurate address is essential. This ensures that administrative processes run smoothly and that everyone is assigned to the correct municipality for elections, for example. It also facilitates communication between businesses and customers, and governments and citizens.

Checking large amounts of addresses to see if your address file is still up-to-date? Contact us if you are interested in this, this feature is still under development.

## 4. Statistical Analysis

ZIP codes are valuable tools for collecting and analyzing statistical data. They are used to collect demographic information, such as population density, income levels, and age distribution within certain areas. Economic trends, such as real estate prices and the distribution of businesses, can also be analyzed using zip codes. These analyses are crucial for policymakers, businesses, and researchers seeking to understand the development of specific regions.

Pro6PP does not have the widest range of countries, but it does have the greatest depth of data per country. For example, in the Netherlands a lot of additional data is available per address. Such as: area, year of construction, neighborhood, neighborhood, etc.

## 5. Emergency

In emergency situations, such as fires, accidents or medical emergencies, an accurate address or zip code allows emergency services to respond quickly and effectively. Proper location pinpointing can save lives by significantly reducing police, fire and ambulance response times. The importance of an accurate address or zip code cannot be overemphasized in these situations.

## Conclusion

Whether delivering a letter, planning a route, or providing life-saving emergency assistance, a Dutch address or zip code plays a crucial role in our daily lives. It is more than just an indication on a map; it is an essential part of how our society functions. The importance of a well-organized and maintained address and ZIP code infrastructure cannot be overstated, and this makes it all the more obvious why we must nurture and continue to optimize these systems.

Linking or merging different data sets also opens up new possibilities and applications, more on that in a future article.


Learn 5 clever Dutch ZIP functions - fast to set up, cost-effective, and conversion-focused. Get insights that help your business shine. Optimize with Pro6PP.

Dutch Address Tips: Boost Sales & Save Money

When you think of an address or postal code, its practical utility probably first comes to mind: finding a location or receiving mail. But did you know that a Dutch address or postal code performs many more functions? In this post, we explore the different roles an address or postal code has in our daily lives and why these little pieces of information can be so important.


# Discover the Download Functionality of Pro6PP

At Pro6PP, we strive to provide our users with the most accurate and up-to-date postal code information. One of the ways we do this is through our extensive download functionality. In this blog post, we will guide you through the benefits and possibilities of this functionality.

## What is the Download Functionality?

Our download functionality allows users to easily access our extensive postal code databases. Whether you are working with data for the Netherlands, Belgium, Luxembourg, Germany, France, Switzerland, Austria, or Denmark, we have the information you need.

## Benefits of the Download Functionality

- Always Up-to-Date: Our databases are refreshed monthly, so you always have the most recent data.
- Easy Integration: The downloaded data can be easily integrated into your own systems, ensuring you always have up-to-date information at hand.
- Flexibility: Whether you are a small business needing only Dutch postal codes, or an international company serving multiple countries, our download functionality offers the flexibility you need.

## How Does It Work?

### Manually

The process is simple and user-friendly. Follow these steps to access our postal code databases:

- Visit our [download page](/en/downloads/nl) and select the desired dataset.
- Select your country: Choose the country for which you want to download the postal code data.
- Download the sample data: Click the download button and the data will be displayed immediately.
- Purchase the data: Click the purchase button, then log in or complete the registration process. Although you will see the term "subscription" during the purchase process, this mainly refers to the period during which you can download free updates for at least one year. If you pay by bank transfer or iDeal, the "subscription" will not be automatically renewed after the year and will stop automatically.

### API Integration

In addition to the manual download functionality, we also offer an API that allows you to automatically update the data in your own systems. This ensures that you always have the most up-to-date information without manual updates. The API call is described [here](https://v1.pro6pp.nl/en/docs/v1/download).

## Conclusion

The download functionality of Pro6PP is designed to provide you with accurate and up-to-date postal code information, easily accessible and ready for integration into your own systems. Try it today and discover how our data can support your business.

I hope this helps! Let me know if you need any adjustments or additions.


Download the exclusive postal-code database-only at Pro6PP-with lowest pricing, monthly updates & smooth integration for businesses of all sizes.


Unique Postal Code DB Download - Best Value


The download functionality of Pro6PP provides users with access to extensive postal code databases for various countries. The main benefits are monthly updates, easy integration into own systems, and flexibility for both small and large companies. The process of downloading the data is simple and user-friendly. Additionally, Pro6PP offers an API for automatic updates. The functionality is designed to deliver accurate and up-to-date postal code information, ready for integration into your own systems.

Postal Code Data & Address Validation API Updates – Pro6PP News

Pro6PP newsletter Spring 2025

The versatile functions of a Dutch address or zip code

Discover the Download Functionality of Pro6PP