Norwegian organisation number: format and how to check it

The number format

The organisation number has 9 digits, often written in groups of three: 923 609 016. The last digit is a check digit computed with modulo 11 on the first eight: a wrong or swapped digit almost always gives an invalid number.

The link with Norwegian VAT

A VAT-registered business has a VAT number of the form NO, the organisation number, then MVA: NO923609016MVA. The suffix MVA stands for the Norwegian value added tax. Not every organisation number is VAT-registered: an association can have a number without an MVA number. For other VAT formats, see French VAT number: format and how to check it.

How to check it

Two levels of checking:

1. The format: 9 digits and a correct modulo-11 check digit. It catches typing mistakes.
2. Existence and status: only looking up the company says whether it exists and is active.

The forms 923 609 016, NO923609016 and NO923609016MVA are recognised.

With Jsonpage

The global identifier of a Norwegian company is NO- followed by the 9 digits: NO-923609016. Establishments are the Norwegian sub-units:

curl "https://api.jsonpage.com/v2/companies/NO-923609016?include=address,vat,signals" \
  -H "X-API-Key: $JSONPAGE_API_KEY"

The record gives the name, status, organisation form and activity, whose label is in Norwegian. For an entity that left the register, the closing date stays empty.

Keep reading

• BELGIUMBelgian enterprise number: format and how to check it10 digits starting with 0 or 1, the link with Belgian VAT, establishment units and how to check it.
• VATFrench VAT number: format and how to check itThe French, Belgian and Swiss formats, the mentions on the invoice and the check before invoicing.
• SWITZERLANDSwiss UID (CHE) number and Swiss VAT numberThe CHE-123.456.789 format, the TVA, MWST or IVA suffix, VAT groups and how to check a Swiss company.