Should You Buy a .si Domain in 2026?

The short answer is no — not as an investment. The one-word .si generics were registered years ago, the resale market is about three buyers deep, and the largest confirmed post-wave sale is $18,888 while asking prices float in the millions. There is exactly one move the evidence supports for almost everyone: buy your own brand name on .si for roughly $12 a year, point it at your real site, and stop.

That is the verdict. Here is the evidence behind it.

What the registration numbers actually say

September 2026 was real: 46,066 new .si registrations (register.si via Domain Name Wire, Oct 1) — roughly 19% of every .si domain in existence, against 3,515 in all of August. The zone passed ~254,000 total by October 2, adding ~13,600 names in a single day on October 1. Netcraft measured new .si registrations overtaking .ai within 25 hours of the UN speech.

But registrations are not a market. Netcraft found that 52% of first-wave .si registrations through Dynadot were immediately listed for resale. Hostinger told TechCrunch (Oct 2) that .si is now its second most popular TLD after .com — 4,300 registrations on September 30, 5,400 on October 1, with more than half of buyers from the U.S. and India. The distribution is concentrated, not universal: GoDaddy doesn't offer .si at all, and Wix reported "no meaningful uptick."

As NotRenewing's operator Sully put it: "Nobody ever talks themselves into two hundred bad names at $85 apiece. At twelve bucks you don't even slow down enough to ask the question." The $12 registration fee is the engine of this boom — and the trap inside it.

For the full picture of what triggered the wave and how the numbers break down, see our .si market analysis.

Confirmed sales vs. asking prices: the gap that decides everything

Five confirmed post-wave sales (NameBio/DNForum/Sedo):

Now the asking prices — listings, not sales. Build.si is asking over $14 million; it last sold for $17,435. Eighty-seven brand-plus-"superintelligence" .com domains are asking $20,000 each with zero ownership changes detected (Netcraft). Twenty-one two-word .si names are asking $1,995 each after being hand-registered on September 22 for $13.76 a year.

If you are buying to flip, understand which story you are buying into. The sales story says the ceiling is $18,888. The asking-price story says millions. As witscode noted (Oct 1), two-word .si names "rarely resell above the registration fee." A maintained breakdown of every confirmed figure lives in our .si domain sales tracker.

End-user adoption: the evidence that isn't there

This is the number that should decide the investment question. Leanne Mac's ProductHunt TLD tracker, cited by Domain Name Wire (Oct 1), recorded zero startup launches on .si in the last 30 days — versus fifty on .ai in the same period. Of 35 reported .si sales in the first half of 2026, 33 were investor-to-investor. On NotRenewing, 44 .si names sold to 21 buyers, and three of those buyers accounted for 21 of the sales: "That isn't a market yet. That's a few guys with a thesis and a credit card."

The single best end-user proof point is pre-wave: Recursive.si, bought for $20,000 in May 2026 by Richard Socher's superintelligence startup (roughly $650M raised in 2026), now 301-redirecting to recursive.com.

Domain Name Wire's caution stands: "Continued growth will depend a lot on whether anyone other than the U.S. government starts referring to AI as SI." And note the actual scope of the bet — the executive order directs the executive branch to use "Super Intelligence" and "SI" in specified official communications and non-statutory documents. The terminology thesis requires adoption far beyond government paperwork.

The SEO reality: Google reads .si as Slovenia

Google Search Central's international guidance lists .ai among the country-code domains it treats as generic. .si is not on the list. Google therefore geotargets .si to Slovenia — a ranking handicap for any business selling to the US, UK, or anywhere outside Slovenia. This doesn't mean a .si site can't appear in foreign search results; it means you're starting with a headwind you didn't need.

The practical consequence is one every careful guide agrees on: buy the .si, point a permanent 301 redirect at the matching page on your real site, and don't build your primary site on it. A second indexed site splits your search signals for the rest of its life.

What $12 actually buys: cost and friction

Retail runs roughly $11–12 a year — Hostinger advertises $11.99 for the first year and $16.99 after — but prices vary wildly between registrars (witscode found Gandi listing the same extension at $126 a year), and renewals are often higher than first-year promos. GoDaddy does not offer .si (TechCrunch, Oct 2); accredited options include Dynadot, Namecheap, Spaceship, Name.com, OVHcloud, and INWX.

One friction most buyers discover too late: .si offers no WHOIS privacy. The holder's email stays public in the registry's records — worth knowing before you register your brand.

Who should buy a .si domain — and who shouldn't

Buy one if: - You own a brand or trademark. Defensive registration at ~$12 a year beats any recovery action later. Register.si itself issued an advisory on September 30 urging trademark holders to register before someone else does. - Your business is Slovenian. It's your national extension; the SI thesis is a bonus. - Your name genuinely ends in "si." True phonetic hacks (analy.si-style) read naturally — here's what separates the strong ones. - You want a cheap campaign or product redirect. Buy it, 301 it to your main site, done.

Don't buy one if: - You're buying generics to flip. The resale window closed within about 48 hours of the news (witscode), and the aftermarket is three buyers deep. If you need to find real buyers for a domain, ask yourself who the fourth buyer is. - You're building a primary site for a non-Slovenian audience. The geotargeting handicap is real and documented. - You're bulk-registering on FOMO. 46,066 September registrations against five confirmed post-wave sales is not a ratio that rewards volume. Evaluate any domain before you buy — the $12 price tag is not a valuation. - You're squatting trademarks. donaldjtrump.si-style grabs carry dispute exposure, and the registry just told trademark holders to come claim their names.

If the name you want is already owned, negotiating a domain purchase through escrow is the safe route — never wire money to a stranger for a domain.

FAQ

Is a .si domain bad for SEO? Not bad in itself, but Google geotargets .si to Slovenia, which is a disadvantage for businesses whose customers are in the US, UK, or anywhere outside Slovenia. Use .si as a redirect to your main site, not as your primary domain.

Can anyone register a .si domain? Yes. Slovenia's registry (ARNES) sets no residency or local-presence requirement — any person or company, anywhere, can register one through an accredited registrar.

Will Google treat .si as a generic domain like .ai? Not today. Google's Search Central guidance includes .ai in its generic-ccTLD list and does not include .si. Reclassification would require Google to observe most .si sites serving non-Slovenian audiences — parked domains don't count.

How much does a .si domain cost? Roughly $11–12 a year at the cheap end (Hostinger: $11.99 first year, $16.99 renewal), but prices vary widely between registrars — compare before buying, and check the renewal price, not just the first-year promo.

Can I register .si with GoDaddy? No. GoDaddy does not offer .si (TechCrunch, Oct 2). Accredited registrars include Dynadot, Namecheap, Spaceship, Name.com, OVHcloud, and INWX.

Should I redirect my .si to my main site? Yes — with a permanent 301 (or 308) redirect to the matching page on your primary domain. That keeps the .si from being indexed as a separate Slovenian site and passes any links it earns to the pages you actually rank with.

The verdict, restated

Buy your brand. Redirect it. Don't speculate. The .si wave is a real registration event sitting on top of a thin aftermarket — the data supports a $12 insurance policy, not an investment thesis. Revisit the question only if non-government companies start saying "SI" and building on .si. Until then, do what the disciplined investors do: watch the renewal numbers in September 2027.