How to use

IBANcheck Nationaal


Get your API key

API keys are unique codes that identify you or your application each time you make a call to one of our API’s.

To make API requests you will need an API Key. Please register in order to receive credentials.

Run sample requests

You can see a few sample request with dummy input and output in the documentation tab. There you can preview the input and output responses from the API’s.

Connect to the services

In order to receive real (non-dummy) data output you will need a production account. After registration you will be given personalized login credentials and receive further instructions to activate your product account. 

Do you already have a contract to access API’s from either Cendris or Data Solutions by PostNL (both wholly owned by PostNL)? Please contact your Account Manager.

Read the documentation

Get familiar with our API documentation. The detail essential information common to all of our services. You need to be aware of these conventions before integrating any of our services.

Go to production

When you become a customer you receive a personal customer code/number and further information.


What is the IBANcheck Nationaal?

IBAN is a way of showing your existing bank account details in an internationally recognised and standardised format.

Ensure correctly entered bank account details and avoid payment failures or additional bank charges.

How does the IBANcheck Nationaal work?

Simply use the API to validate an IBAN code or turn an account number into a complete IBAN code.