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ApiCheck helps you validate customer data.
There are two API services available: lookup and search.

  • Lookup can be used only in specific countries (currently only The Netherlands and Luxembourg). The reason for this is that postal codes and numbers are unique to streets. The main function of this service is to quickly look up the address details within one call. This can be useful in checkout processes, so entering addresses is quick and easy.
  • Search can be used in every supported country. The main function of this service is to search different components addressed in one simple and normalized way for each country. You can implement this service for example in autocomplete fields to guide the user towards the right  (and correct) address.

The main endpoint for making HTTP requests is:

For optimal usage of our service, we encourage sending the headers listed below with every request:

Accept: application/json

Referer: <the url you are making the request from>

Before you start please review our API endpoints on the left-hand side, and sign up for an account.


We offer the following support:

Country Support Updates
The Netherlands 🟢 Yes (active) Every month
Belgium 🟢 Yes (active) Every month
Luxembourg 🟢 Yes (active) Every month
France 🟢 Yes (active) Every month
Italy 🟠 Planned (in development) n/a
Spain 🟠 Planned (in development) n/a
Germany 🟠 Planned (in development) n/a

Not exactly what you are looking for?

Get in touch with us, and we are happy to create custom endpoints or functionalities to fit your needs!