External API

Domain zone rules for .nu

On this page you will find detailed information about the general domain name zone rules and contact requirements. The listed set of contact fields is expected at the time of domain name registration or transfer.

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Not supported: CU, IR, KP, SY, SD, RU, BY


RegExp: ^[^,\.;]+$

RegExp: ^[^,\.;]+$
House number

RegExp: ^[^,\.;]+$


Required for countries: US, GB



RegExp: .*

Personal identity number requirements:

  • A personal number is required for registrants from Sweden. For registrants from other countries, a social security number is required.
  • If the registrant provides a Swedish address but wishes to use an ID number issued by another country, the ID number MUST include the two-letter code of the issuing country in square brackets.
    For example, a passport from the Netherlands with the number 12345678 would be recorded as [NL]12345678. For residents of Sweden, do not include the country code; the acceptable format is 123456-7890 (6 digits, dash, 4 digits).
  • If the registrant provides a non-Swedish address, the SSN should be provided without dashes, for example: NL12345678 or 111122222333333

Online tools to check an SSN: Swedish SSN or Other Country SSN


Must be empty or not present
Namestore is a virtual bucket for a contact; some domain zones accept any Namestore, while others require a specific value.