Personnummer Required

ID numbers for Swedish customers only now required by registry regulations

When registering a new domain name, additional information is required by some Top Level Domains.

At, we value your privacy and personal rights. We strive to create the best user experience we can while maintaining the expectations of governing bodies and international law.

Since 2013, the .NU Top Level Domain requires that all Swedish domain name registrants supply their ID number.  If the domain is registered to an individual, then it should be that person’s personal ID number (Personnummer). If the domain is registered to a corporation, then it should be the corporate ID number.

It is important to have your personnummer or ID number associated with your domain as it will ensure correct ownership.

For details, please refer to sections 3.1.1 and 4.1.1.ii of the .NU Terms and Conditions.

Section 3.1.1 states:

3.1.1 Any natural person or legal entity with a personal identification number or corporate identity number, or that can be identified via a registration designation in a register maintained by a governmental authority, or by an organization exercising state authority, may apply for registration of a Domain Name under the top-level domain .nu. For foreign Domain Holders, a unique identification number can be used instead.

For non-Swedish entities, this ID number is not required; but some other unique identifier, such as phone number or email address, must be provided instead. Instructions for entering this number are given below.

In addition, all other customer contact information must be complete, correct, and correctly formatted. If your information is not valid, your registration may fail.

Please ensure that all data in your account is correct before attempting to register a new .NU domain name. If you are a Swedish resident or represent a Swedish organization, your personal or organization ID number must be present in your account.

Before registering a new .NU domain name for the first time, please create an account and make sure that your Personal ID Number has been entered. New .NU registration attempts made without being logged in to your account and without this number being entered in the correct format will fail.

To add your Personal or Corporate ID number, after logging in to your Customer Area:

For Swedish residents, the number should be of the form:


For non-Swedish residents, the form should be:


where CC is the two-letter country-code (“Alpha-2 code”) for your country and nnnnnnnn is any unique, identifying sequence of numbers or letters – for example, your national ID number, your phone number, or your email address.

For instance, if you live in the United States, you could enter your phone number in the form [US]212-555-1212 or your email address in the form [US]

Once your Personal ID Number (Personnummer) or Corporate ID Number has been entered and you are logged in to your account, you will be able to successfully register new .NU domain names without error.

Please know that all contact details of individuals, including ID number, are required by the .NU registry but remain private and are not disclosed.

The above ID requirement applies to the .NU Top Level Domain and to the .SE Top Level Domain.

  • personnummer, id number, .nu, .se, corporate id number, personal id number, privacy
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