Skip to content
Product
API
A company by KVK number or domain, as JSON
Fields
What you get back per company, by group
Access
Make an account and your own API keys
Changelog
What's new in the API and the app
Use cases
Overview
What teams use Achtcijfers for
Enrich sign-ups
The company behind a work email address
Update your CRM
Keep companies up to date by KVK number
Enrich a list
A list of KVK numbers in one call
Pricing
Guides
About
About
Why we started Achtcijfers
Trust
What a company does, not who someone is
Security
Where the data lives and how to report a flaw
Your company
See what we show, or have something changed
Scanner
What the scanner reads and how to keep it out
Contact
A question? A person writes back
Sign up
Privacy
Our privacy statement is in Dutch, and the Dutch text applies.
Read the privacy statement in Dutch
.
Updated 20 October 2026
