To register .se/.nu you need a CVR or CPR number, and .no requires a Norwegian organisation number or personal ID plus a Norwegian address (personal ID can be obtained from Norid).
To register a .se or .nu domain, a valid CVR or CPR number must be entered on the account.
To register a .no domain, a valid Norwegian ORG‑number or Person‑ID must be entered on the account. In addition, a Norwegian postal address is required.
If you have a Norwegian national identification number, you can generate a Person‑ID on the following page: https://www.norid.no/en/nytt-domenenavn/lag-person-id/
Article from the support category: Domain & DNS