Shape, check digit, accepted and refused examples and the API call for KVK number in Netherlands. Every example on this page is run through the same validators as the free identifier validator, so a value shown as accepted is a value the validator accepts.
| Field | Value |
|---|---|
| Register | GLEIF (LEI-registered entities); the KVK number of the Kamer van Koophandel |
| Shape | N{8} |
| Check digit | None: the shape is the only test. No check digit is published: exactly 8 digits, a leading zero is part of the number (04040577), 00000000 is no number. The shape is the only test. |
| Worked example (accepted) | 17085815 |
| Normalised form | 17085815 |
| Also accepted as input | 04040577 |
| Regex (normalised form) | ^[0-9]{8}$ |
| API call | GET /companies/search?country=NL&company_number=17085815 |
| VAT number | The register data holds no VAT number for this identifier. |
The KVK number is the number of the Dutch Chamber of Commerce. Prometiam serves only Dutch legal entities that hold an LEI and whose KVK number GLEIF records (BV, NV, SE, cooperatives, OWM, CV and VOF), not every Dutch company and not an extract of the Dutch commercial register: a well-formed KVK number of a sole proprietorship, a foundation or an association finds nothing. A 9-digit number is an RSIN and is refused. The Dutch VAT number (btw-nummer) is a separate number and cannot be derived from the KVK number.
curl "https://api.prometiam.com/functions/v1/risk-api/companies/search?country=NL&company_number=17085815" \ -H "Authorization: Bearer YOUR_API_KEY"
Shape notation: N digit · L letter · X digit or letter · C check digit or character · {n} repeat n times.
A valid shape and check digit prove that a number is well-formed, not that a company holds it. Only a lookup in the register answers that.
Register data that the API serves for Netherlands carries this credit:
Contains LEI data from the Global Legal Entity Identifier Foundation (GLEIF), available under CC0 1.0. LEI-registered entities only; not an extract of the Dutch commercial register (Handelsregister, KVK).
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