Stop searching, start finding

The postcode API for the Benelux

Turn a postcode and house number into a complete, validated address in an instant.

REGISTER
Test the API

DirectMatch API

The DirectMatch API provides a fast and accurate way to retrieve complete address details based on postcode and house number.

Key benefits:

  • Simple and fast
  • Instant validation and completion
  • Efficient for form validation
  • Support for multiple countries (NL, BE, LU)

Perfect for address validation in checkout forms, CRM systems, and logistics applications.

What is postcode-api.nl?

The postcode-api.nl address API turns a postal code and house number into a complete, validated address — street, city and geodata — for the Netherlands, Belgium and Luxembourg. Use it for address validation in checkout and sign-up forms, enriching CRM and logistics data, and address autocomplete while your customer types.

Three endpoints cover most use cases: Autocomplete for address suggestions while typing, DirectMatch for an exact lookup by postal code and house number, and Radius for addresses within a distance of GPS coordinates.

All countries, on every plan

REGISTER Documentation
  • Fast and reliable: instantly retrieve the correct address data
  • Easy integration with clear API responses
  • Always up-to-date postcode data
  • Transparent pricing with no hidden costs
API Endpoints

Choose the endpoint that fits your flow: suggestions while typing, instant address validation by postal code and house number, or distance-based search via coordinates. This makes forms faster, more accurate, and easier to use.

Autocomplete

Search for addresses using autocomplete functionality with support for multiple countries

curl -X GET \
     --header "Authorization: Bearer $YOUR_TOKEN" \
     --url "https://api.postcode-api.nl/v1/autocomplete/nl/Nieuwezijds%20Voorburgwal%20147"
DirectMatch

Get complete address details by postal code and house number for precise lookups

curl -X GET \
     --header "Authorization: Bearer $YOUR_TOKEN" \
     --url "https://api.postcode-api.nl/v1/directmatch/nl/1012RJ/147"
Radius

Find all addresses within a specified radius from GPS coordinates (latitude/longitude)

curl -X GET \
     --header "Authorization: Bearer $YOUR_TOKEN" \
     --url "https://api.postcode-api.nl/v1/radius/nl/52.373196/4.891377/60"

Plan 1

Small but mighty

€4.95 /month
  • DirectMatch API
  • 2.500 requests per month
  • 5 requests per second
Get started

Plan 2

Simple and direct

€8.25 /month
  • DirectMatch API
  • 5.000 requests per month
  • 10 requests per second
Get started

Plan 3

The power of precision

€24.91 /month
  • DirectMatch API
  • Autocomplete API
  • Radius API
  • 25.000 requests per month
  • 25 requests per second
Get started

Plan 4

Final boss tier

€58.25 /month
  • DirectMatch API
  • Autocomplete API
  • Radius API
  • 75.000 requests per month
  • 50 requests per second
Get started

All prices mentioned are excluding 21% VAT.

Questions ? We've Got Answers