You can use the Zoeken API to retrieve the KVK number of a registration. You can then request additional data using one of the other APIs.
The use of this API is based on a set monthly subscription fee and an additional fee per request for information.
KVK API connection (= API key):
€ 6.00 per month
KVK Handelsregister Zoeken:
€ 0 per request
Quotum:
300,000 per month
Rate limit:
100 per second
Availabililty:
always