Domains · Industry News

.SI Domain Rush: How Trump's "Super Intelligence" Rebrand Made Slovenia's Domain the New .AI

Muhammad Hamza 2 October 2026 10 min read

.si domain name rising above Slovenia with growth charts — the Super Intelligence domain rush — Slovenia's .si extension became the most-watched domain in the world within days of the "Super Intelligence" announcement.

What Happened: From .AI to .SI

For three years, .ai (Anguilla's country domain) was the hottest extension in tech. Every AI startup wanted one, and good names sold for five and six figures. Then, on 22 September 2026, US President Donald Trump told the United Nations General Assembly that "artificial intelligence" should be renamed: "The use of the word artificial makes it sound fake. It's not fake, it's actually amazing... welcome to the new world of super intelligence."

One week later, on 29 September 2026, he signed an executive order — "Inaugurating the Era of Super Intelligence" (official White House source) — directing the entire US executive branch to use "Super Intelligence" and "SI" instead of "Artificial Intelligence" and "AI" in official correspondence, websites, reports and policy documents.

The problem — or the opportunity, depending on who you ask — is that .si is already taken as a domain extension: it belongs to Slovenia. Within 24 hours of the UN speech, .si registrations jumped from about 100 per day to over 3,200. Within a week, new .si registrations had overtaken new .ai registrations. Slovenia's registry, Register.si, confirmed 46,066 new .si domains in September 2026 — a roughly 2,199% increase over August, with 11,000 registered on 30 September alone.

The Numbers: .SI Registration Explosion

Data from Register.si, Netcraft, Domaintechnik and Domain Name Wire shows how fast this moved:

Date / Period	What happened	Source
August 2026 (whole month)	~3,500 .si registrations	Normal baseline
22 Sep 2026	Trump's UN speech: AI → 'Super Intelligence (SI)'	Trigger event
Day after the speech	3,234 registrations in 24 hours (30× normal)	Netcraft / Domaintechnik
Week after the speech	17,621 new .si vs 7,209 new .ai	.si overtakes .ai
29 Sep 2026	Executive order signed at the White House	Second surge
30 Sep 2026	11,000 registrations in a single day	Register.si
September 2026 total	46,066 new .si domains (~2,199% increase)	Registry confirmed

The registry itself issued a public statement "strongly recommending" that trademark holders, companies and brands register their .si names as soon as possible — an almost unheard-of move for a national registry.

.SI vs .AI: How the Two Extensions Compare

If you're deciding where to put your money or your brand, here's the honest comparison:

Extension	.si (Slovenia)	.ai (Anguilla)
Meaning now	Super Intelligence	Artificial Intelligence
Registry price	~€10/year	~$160 wholesale (2-yr minimum)
Local presence needed	No — open worldwide	No — open worldwide
Good one-word names	Still available	Mostly taken or premium
End-user adoption	Early (mostly investors)	Established (startups)

The pattern repeats: .io (Indian Ocean) became the startup domain, .ai (Anguilla) became the AI domain, and now .si (Slovenia) is the "Super Intelligence" domain. Small countries, big windfalls — Anguilla reportedly earns tens of millions of dollars a year from .ai.

How the SEO & Domain Community Is Making Money From .SI

The SEO and domaining community moved within hours of the UN speech. Netcraft detected speculative buying through major registrars before the speech, after Trump's social media posts hinted at the rename — and found that over 50% of those early .si domains were listed for sale within days, some with asking prices in the millions of dollars for generic words.

The main money-making plays right now:

Domain flipping: register generic one-word .si names at ~€10, list them on aftermarket platforms (Dynadot, Sedo, Afternic) at hundreds or thousands of dollars.
Portfolio holding: buy 20–50 strong names and hold them as "SI" adoption grows, the same strategy that made .ai investors rich over three years.
Develop & sell: build a real content site, directory or tool on a .si domain so it has traffic and revenue — developed domains sell for multiples of parked ones.
Defensive registration services: agencies are offering brand-protection packages, registering clients' .si names before speculators do.
Content & affiliate plays: publishing .si-related content (like this article) to capture the surge in search demand for ".si domain", "super intelligence" and "buy .si domain" queries.

A word of caution from Domain Name Wire: almost all .si aftermarket transactions so far are investor-to-investor, and tracking of ProductHunt launches shows no startups actually launching on .si yet — 50 launched on .ai in the same 30-day window. The .ai boom took three years to mature. Treat .si as a cheap, speculative bet, not a guaranteed return.

Step-by-Step: How to Register & Invest in .SI Domains

1. Understand what you're buying

.si is Slovenia's country-code domain (ccTLD), managed by Register.si since 1992. It is open to anyone in the world — no Slovenian address, company or residency required. After the US government adopted 'SI' as the official term for Super Intelligence, the extension became a two-letter branding play, the same way .ai did for artificial intelligence.

ccTLD, not a generic TLD — but Google treats many ccTLDs as generic when used globally.
Renewals are cheap (~€10/year), so holding costs are low.

2. Research names before you register

The money is in short, brandable names: one-word .si domains, names ending in 'si' (e.g. words like 'tesla.si' style hacks), and SI-related terms (agent, model, neural, quantum + .si). Check availability at any accredited registrar — Dynadot, Namecheap, GoDaddy and others all carry .si.

Prioritise one-word, 3–6 character and dictionary names.
Check trademark databases before registering brand terms — cybersquatting on trademarks can lose you the domain.

3. Register fast — the good names are going daily

Register.si reported 11,000 registrations on 30 September alone, and the registry itself publicly urged brand owners to secure their .si names 'as soon as possible'. Registration is instant at most registrars and costs roughly €10 per year.

Register for multiple years to lock the price.
Enable auto-renew — losing a premium name at renewal is the most expensive mistake in domaining.

4. Decide your strategy: hold, develop, or flip

Domain investors are using three plays. Hold: park the domain and wait for end-user demand as 'SI' adoption grows. Develop: build a content site or tool on the domain to give it traffic and value. Flip: list it on aftermarket platforms (Dynadot, Sedo, Afternic) — Netcraft found over 50% of the early speculative .si registrations were listed for sale within days, some with asking prices in the millions.

Realistic flips: price against recent .ai sales, not lottery numbers.
Developed domains sell for multiples of parked ones.

5. Protect your own brand first

If you run a business, register yourbrand.si before a speculator does. Register.si explicitly warned trademark holders to secure their names. Defensive registration at €10/year is far cheaper than buying your own brand back on the aftermarket later.

Also grab common misspellings of your brand.
Set a reminder for renewal dates.

6. Watch the risk signals

Be honest about the risk: Domain Name Wire notes that almost all .si aftermarket activity so far is investor-to-investor, and ProductHunt tracking shows no startups launching on .si yet (50 launched on .ai in the same window). The .ai boom took three years to mature. Treat .si as a speculative, low-cost bet — not a guaranteed return.

Only invest money you can afford to hold for years.
Diversify: a portfolio of 20 good names beats one expensive gamble.

Avoid trademarked names. Registering someone else's brand to resell it to them is cybersquatting and can lose you the domain under dispute policies. Stick to generic, dictionary and brandable terms.

What This Means for Businesses in the UAE

If you run a business in Dubai, Abu Dhabi or anywhere in the UAE, there are two practical takeaways. First, register yourbrand.si now — at €10 a year it's cheap insurance against speculators, and if "SI" becomes the standard term, you'll own a piece of it. Second, don't abandon your .ae or .com: for local rankings, a UAE domain still sends the strongest geographic signal to Google, and .si currently carries no local SEO advantage for the Emirates.

And if you're in the SEO industry, this is a live case study in how fast search demand shifts: queries for ".si domain" and "super intelligence" went from near zero to tens of thousands in a week. The agencies that published early captured the traffic. That's topical authority in action — see our Topical Authority guide and AEO & GEO update for how to position your site for the next wave.

Frequently Asked Questions

What is a .si domain?

.si is the country-code top-level domain (ccTLD) of Slovenia, managed by Register.si. It is open for registration to anyone worldwide with no local presence requirement, and costs around €10 per year.

Why are .si domains in demand in 2026?

US President Donald Trump announced that the US government would replace 'Artificial Intelligence (AI)' with 'Super Intelligence (SI)' — first in a UN speech on 22 September 2026, then in an executive order signed on 29 September 2026. Since .si matches the new official abbreviation, registrations surged roughly 2,199% in one month.

What did Trump's executive order actually say?

The order, titled 'Inaugurating the Era of Super Intelligence', directs the executive branch to use the terms 'Super Intelligence' and 'SI' in place of 'Artificial Intelligence' and 'AI' in official correspondence, websites, reports and policy documents, to the maximum extent permitted by law.

How many .si domains were registered after the announcement?

Slovenia's registry confirmed 46,066 new .si registrations in September 2026, compared to around 3,500 in August. On 30 September alone, 11,000 new domains were registered, and .si registrations overtook .ai in the week after the UN speech.

Is .si better than .ai for a tech startup?

It depends. .ai is established with real startup adoption but expensive (~$160 wholesale, 2-year minimum) and most good names are taken. .si is far cheaper (~€10/year) with many strong names still available, but end-user adoption is still early — most buyers so far are domain investors.

Can anyone register a .si domain?

Yes. There is no residency, citizenship or local business requirement. You can register a .si domain through most major registrars including Dynadot, Namecheap and GoDaddy.

How is the SEO community making money from .si domains?

Three main ways: registering premium names early and reselling them on aftermarket platforms (flipping), parking portfolios of names while demand grows (holding), and building content sites or tools on .si domains to sell as developed assets. Some are also offering defensive registration services to brands.

Is buying .si domains cybersquatting?

Registering generic words (like 'agent.si') is legal domain investing. Registering someone else's trademark to sell it back to them is cybersquatting and can cost you the domain under dispute policies. Stick to generic, dictionary and brandable terms.

Will Google rank .si domains well?

Google can treat widely-used ccTLDs as generic when they are used globally rather than locally. If .si adoption continues, it is likely to be treated similarly to .ai, .io and .co. For UAE or local businesses, a .ae or .com still sends stronger local signals.

Is the .si rush a bubble?

Possibly partly. Analysts note that most .si aftermarket sales are currently investor-to-investor, with little end-user adoption so far. The .ai boom took years to mature. Low registration cost makes .si a cheap speculative bet, but there is no guarantee of resale value.

Sources & Credits

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