All TLDs / .sx

What is .sx?

.sx is the country-code top-level domain assigned to Sint Maarten, run by SX Registry SA B.V.. It's live in the IANA DNS root zone. Registration is open through accredited registrars, though some country registries add local-presence or ID requirements.
Type
Country code (Sint Maarten)
Registration
Open to public
In DNS root
Yes

Registry operator: SX Registry SA B.V. — per the IANA root database.

Source: IANA root zone database, checked August 23, 2026.

Is .sx a real domain extension?

Yes — .sx 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 .sx?

.sx is operated by SX Registry SA B.V., the registry responsible for Sint Maarten, per the IANA root database.

What is .sx used for?

.sx is the extension tied to Sint Maarten. Many country codes are also used generically for branding when the letters spell something useful.

Can anyone register a .sx domain?

Generally yes — .sx 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.

.sx and Sint Maarten

.sx is the country-code top-level domain assigned to Sint Maarten, administered by the registry SX Registry SA B.V..

.sx is the country code top-level domain (ccTLD) in the Domain Name System of the Internet for Sint Maarten.

Source: Wikipedia — .sx (CC BY-SA)

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