Which data
You provide, among other things, your name, address and current contact details with email addresses, IP ranges and telephone numbers, and the sectors you belong to [1]. The Cbb adds: whether you register as an essential or important entity, your KvK number (Chamber of Commerce number), the type of entity and your domain names [2].
When
The Cbw and the Cbb give no deadline for the first submission, and no transitional period either: the duty has applied since the entry into force on 15 August 2026 [3]. You report a change without delay or in any case within two weeks [4].
How
You provide the data to the Minister through the mechanism set up for that purpose [1].