The assignment of an organisation number takes place through registration in the Central Coordinating Register for Legal Entities (one of the Brønnøysund registers). To register, you must fill in a Coordinated Register Notification (BR-1010). The form can either be filled in electronically on Altinn.no or you can contact the Brønnøysund Register Centre to have the form sent to you.
The Coordinated Registration Notification (BR-1010) is a joint form for registration in the Central Coordinating Register for Legal Entities, the Register of Business Enterprises, the VAT Register, the Norwegian Labour and Welfare Administration’s (NAV) Register of Employers and Employees (the NAV AA register), the Business Register of Statistics Norway, the Register of Foundations and the Corporate Taxation Data Register.