Norwegian citizens who were either born abroad or have not since 1964 been residents of Norway, must obtain a personal ID-number before a Norwegian passport can be applied for. Others may be informed of their personal ID-number by calling the Directorate of Taxes on + 47 62 88 23 20.
An enquiry for a personal ID-number is directed to the Royal Norwegian Embassy, and must be accompanied by a true certified copy of the applicant’s birth certificate. Birth certificates not issued by Norwegian authorities need to have an Apostille affixed. (The Embassy can translate and confirm true copy)