All TLDs / .sj
What is .sj?
Registry operator: Norid A/S — per the IANA root database.
Source: IANA root zone database, checked August 23, 2026.
Is .sj a real domain extension?
Yes — .sj is a real top-level domain. It's present in the official IANA DNS root zone, which is the authoritative list of every live TLD on the internet.
Who runs .sj?
.sj is operated by Norid A/S, the registry responsible for Svalbard and Jan Mayen, per the IANA root database.
What is .sj used for?
.sj is the extension tied to Svalbard and Jan Mayen. Many country codes are also used generically for branding when the letters spell something useful.
Can anyone register a .sj domain?
Generally yes — .sj is open through accredited registrars, though some country registries require local presence or ID. Availability of a specific name depends on whether it's already taken.
.sj and Svalbard and Jan Mayen
.sj is the country-code top-level domain assigned to Svalbard and Jan Mayen, administered by the registry Norid A/S.
.sj is the Internet country code top-level domain (ccTLD) reserved for the designation Svalbard and Jan Mayen. The domain name registry is Norid, but .sj is not open for registration. The issuing of the domain was based on the ISO 3166 designation of Svalbard and Jan Mayen, which consists of two separately administrated integrated territories of Norway: the Arctic archipelago Svalbard and the nearly uninhabited volcanic island Jan Mayen. .sj was designated on 21 August 1997, at the same time as Bouvet Island was allocated .bv. Both were placed under the .no registry Norid, which is also the sponsor. Norwegian policy states that .no is sufficient for those institutions connected to both Svalbard and Jan Mayen, and therefore the domain is not open to registration. It is Norwegian policy not to commercialize domain resources, so there are no plans to sell .sj. Should the domain later come into use, it will be under regulation of the Norwegian Communications Authority and follow the same policy as .no. There are two second-level domains reserved for the two areas: svalbard.no and jan-mayen.no, but other web addresses are also used.
Source: Wikipedia — .sj (CC BY-SA)
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