If you are a diplomatic mission or an international political organisation, you can find your PROBAS number in the ePortal of the Ministry of Foreign Affairs.
Please note: Only diplomatic entities (such as embassies and consulates) and international political organisations (such as the International Criminal Court or the European Medicines Agency) are assigned a PROBAS number.
If you are a business registered with the Dutch Trade Register (Kamer van Koophandel), you do not have a PROBAS number and should not register for eHerkenning PROBAS. Instead, verify whether you have the right product.