All TLDs / .st

What is .st?

.st is the country-code top-level domain assigned to São Tomé and Príncipe, run by Tecnisys. 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 (São Tomé and Príncipe)
Registration
Open to public
In DNS root
Yes

Registry operator: Tecnisys — per the IANA root database.

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

Is .st a real domain extension?

Yes — .st 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 .st?

.st is operated by Tecnisys, the registry responsible for São Tomé and Príncipe, per the IANA root database.

What is .st used for?

.st is the extension tied to São Tomé and Príncipe. Many country codes are also used generically for branding when the letters spell something useful.

Can anyone register a .st domain?

Generally yes — .st 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.

.st and São Tomé and Príncipe

.st is the country-code top-level domain assigned to São Tomé and Príncipe, administered by the registry Tecnisys.

.st is the Internet country code top-level domain (ccTLD) for São Tomé and Príncipe. The code is marketed worldwide as an abbreviation for various entities.

Source: Wikipedia — .st (CC BY-SA)

Check if you can register a .st domain

Search on NamecheapSearch on DynadotSearch on Porkbun

Not sure this is the right extension? Start from what you’re building, or compare it on the full TLD list.