Norwegian identification number

In Norway, we use identification numbers to identity inhabitants. Many public and private sector organisations require you to have a Norwegian identification number in order for you to gain access to their services. There are two different types of identity number: a D number and a national identity number.

National identity numbers consist of 11 digits, of which the first six digits indicate the person's date of birth.
D numbers also consist of 11 digits, but are temporary.

If you have a D number, but subsequently receive a national identity number, you must only use the national identity number.

In Norway, we have a national population register in which everyone who has been assigned a Norwegian identificationnumber is registered. The National Registry contains key information concerning:

identity and citizenship
whether people are registered as resident in Norway
residential address
postal address
marital status and children
any status of residence permit

Here at the Tax Administration, we are responsible for ensuring that the National Registry is complete and up-to-date.

Many public and private sector organisations require you to be registered as resident in Norway in the National Registry. The information is used by other organisations, including:

the tax authorities
the electoral authorities
other public authorities, such as NAV, the Directorate of Immigration (UDI), the Norwegian Immigration Appeals Board (UNE), the Norwegian Armed Forces, the Norwegian State Educational Loan Fund, the Norwegian Public Roads Administration, the police and the fire and ambulance services
Statistics Norway (SSB)
banks and insurance companies
employers
researchers
private organisations and individuals

Note that being registered as resident in Norway in the National Registry is different from being considered to be a tax resident of Norway.