What is .si?
.si has been Slovenia's country-code domain since 1992, run by the registry Register.si (Arnes). Today the same two letters also stand for superintelligence. In September 2026, a US executive order told federal agencies to use 'Super Intelligence' and 'SI' in place of 'AI,' and the shorthand spread.
Who can register one?
Anyone, anywhere. A founder in San Francisco can own one just like a business in Ljubljana.
- 2 to 63 characters: letters, numbers, hyphens
- Registrations and renewals run 1 to 5 years
- Full rules: the registry's general terms
Why .si for superintelligence?
SI is the shorthand for superintelligence, so a .si name makes your pitch before anyone reads a word. ThirdBrain.si. PostHuman.si. Short, memorable, and unmistakably built for what comes next.
Worth knowing
.si is still a country domain, and the registry sets its rules. It works with every host, email provider and site builder, just like .com.
How buying works
- Pick a name and open its page.
- Pay securely through GoDaddy.
- The domain moves into your account, usually within minutes to a few days.
- 10
- Top sales
- 40
- Over $10k
- Sep 29 – Oct 26
- Period
- Chain.si$84,000Oct 17, 2026 · Spaceship
- OpenRouter.si$50,000Oct 17, 2026 · Auction
- Staffing.si$50,000Oct 10, 2026 · Spaceship
- Run.si$34,999Oct 23, 2026 · Atom
- Gifts.si$31,326Oct 10, 2026 · Fruits
- Hollywood.si$30,000Oct 6, 2026 · Sedo
- Inbound.si$28,888Oct 27, 2026 · Spaceship
- Runtime.si$28,888Oct 7, 2026 · Spaceship
- Rebellion.si$28,700Oct 15, 2026 · Venue not disclosed
- Pure.si$26,851Oct 7, 2026 · Fruits
Third-party aftermarket sales as reported by venues and sales trackers; not DotGremlin names. Prices in USD.
Good Names. Simple Process.
- Distinctive domainsA curated collection of memorable domain names chosen for their identity, simplicity and potential.
- Simple checkoutPurchases are completed securely through GoDaddy.
- Previously soldAustralia.si · 6 Oct 2026
Prompted.si · 29 Sep 2026
Programmers.si · 29 Sep 2026Sold via Dynadot - Questions? Just ask.Need more information about a domain?Get in touch on the home page
.si domain FAQ
What does it cost to keep? Just the yearly renewal, like any domain. Prices vary by registrar, so check yours before you buy.
Does it work with email and website builders? Yes. Every host, email provider and site builder, exactly like a .com.
Can I keep my current website? Yes. Point your .si name at it, or use it as a short link that redirects there.
How fast is the transfer? Usually minutes, sometimes a couple of days. Then the domain is yours, ready to use.
Find your next domain
Browse all ten names, listen to each one and buy securely on the DotGremlin collection.