This guide concerns domain names with the .se extension.

Preamble

• The .se domains are managed by Internetstiftelsen i Sverige (IIS), the official body that governs domain names in Sweden.
• They were introduced in 1986 and it was during the 2000s that they gained popularity as their suffix could be used for words like "clo.se", "sen.se", etc.

Change the owner of a .se domain

To change the owner (or owner) of a .se domain, the procedure defined by the IIS involves filling out a specific form.

In the form, the IIS IDNO (ID Number) field is a key requirement:

• For Swedish citizens: enter the social security number (Personnummer), 800101-1234 for example,
• For Swedish companies: use the company registration number (Organisationsnummer) 556123-4567 for example,
• For foreign citizens or non-Swedish companies: enter an identification number such as a passport number, an identity card, or an equivalent for your country.

This is to authenticate the owner and prevent disputes or fraudulent use of the domain. The change may take a few days, depending on how quickly the documents are verified.