2026-10-09

The .si surge: how an AI renaming turned a small country code into the fastest-moving namespace of 2026

A policy rename, 89,938 new registrations in twelve days and a week of five-figure .si sales. What the registry numbers actually show, what the wave did not do, and which .si names still make sense to buy at the end of it.

On 29 September 2026 a policy document in Washington renamed a field. What had been written as artificial intelligence was written down as superintelligence — SI. The document says nothing about domain names, and it was never meant to. But within days the two letters had moved out of a government paper and into a registry, and .si — the country code of Slovenia — became the busiest small namespace in the domain market.

The numbers are not subtle. On 23 September the .si registry held 198,535 names. On 5 October it held 288,473. That is 89,938 registrations in twelve days — a 45.3% jump, a pace near 7,500 new names a day. A line that had crawled upward for years turned into a step.

What actually happened

Three things moved at once. They are worth separating, because each one suggests a different decision:

• A narrative shift. Buyers of .si stopped buying Slovenia. They were buying the two-letter abbreviation of a term that had just entered the news cycle, at a moment when the obvious .ai names had been priced out of reach for years.
• A registrar push. Registrar reporting showed a small number of sellers driving most of the volume: Dynadot alone accounted for a little over half of new .si registrations in the period, and Hostinger reported roughly 22,800 registrations from about 8,000 buyers. Promotional pricing did much of the work — a namespace that costs one year at a discount is cheap to sample.
• An aftermarket step. Auctions followed. In the first week of October, twenty reported .si sales totalled $116,470: runtime.si at $28,888, travelagent.si at $19,988, Caspian.si at $19,795, timeline.si at $17,677, bankruptcy.si at $10,000, move.si at $8,592, yn.si at $6,805, nation.si at $6,500, xh.si at $6,408, spicy.si at $5,000, serve.si at $4,888, quill.si at $4,699 and antiques.si at $3,888. The same market closed a $99 sale that week — statements.si, in a registrar auction.

What the wave did not do

This is the part that separates a wave from a bubble, and it is measurable. Of the names added in those twelve days, only about 3% contain an AI or SI related word. Roughly 97% of the new registrations are not keyword plays at all — they are something else: a service word, a brandable, a local business name, a defensive registration.

The obvious keyword names were gone before the wave started, too. In our own availability checks against the registry — run through RDAP rather than reseller search pages — the results were blunt:

• Two-letter .si combinations: 676 checked, 0 available.
• The 1,202 most common English words in .si: 1 available.
• 121 technology and AI words in .si: 0 available.

If you are arriving now to buy the .si version of a keyword you saw in a headline, you are paying for someone else's timing rather than your own. The names that were worth having in this namespace were taken long before a policy paper made them interesting.

What still sells, and why

The sale list above has a pattern that has nothing to do with AI. Look at what changed hands: runtime, timeline, bankruptcy, move, nation, serve, antiques, statements. These are words a business can use tomorrow — a product name, a service category, a company. The buyer at $99 and the buyer at $28,888 are not running the same play: the second is buying an audience, the first is buying a page.

Two shapes carry most of the demand in a namespace like this:

1. Service and category words. A .si name that names a service is sellable to somebody running that service, in Slovenia or outside it — chauffeurs, the word a driver business already uses; postings, which reads as a job board; consultancies, homestays — the words an operator recognises in one glance. They look like a business, not like a ticker symbol.
2. The twin of a name that has already sold. When a .com brand sells for a few thousand dollars, somebody has just paid to validate that name — which makes the .si twin a cheap option on a brand with proven demand. In a sample of 22 recently-sold .com brands we checked, 11 .si twins were still unregistered. The .com sale creates no .si demand by itself; that gap is the opportunity.

A buying checklist for a namespace mid-run

• Verify at the registry, not at the reseller. A registrar search box can show a name as free while a previous registration is still inside its grace period. RDAP is the registry's own answer.
• Anchor the price to something that traded. A service word in a small ccTLD is a $100–$500 name in this market, not a $10,000 name — the five-figure .si sales above are one-word, high-audience names that were held for years before this month.
• Buy the set when it is a set. Four service keywords that tell one story sell better together than one name sold alone — and a set is easier to explain in a single message.
• Renew for more than one year. A registration expiring in eleven months is a liability, not an asset, and buyers read the expiry date.
• List where buyers act. A name with no distribution is a hobby. The channel map — registrar distribution, marketplaces, your own page, and why fast transfer decides whether a name sells at all — is in the previous piece on this blog.

Where this goes next

There are two futures, and the honest answer is that nobody knows which one arrives. In the first, SI sticks as the word the industry uses, .si keeps a stream of buyers who are not buying Slovenia, and the service words bought this month become sellable to exactly the businesses they describe. In the second, the term fades, the promotional registrations lapse, and .si returns to what it was: a small, tidy national namespace.

The strategy that survives both is the same one: buy names with a second reason to exist. A service word in a country market does not need the narrative to hold — it only needs a business that wants the word.

“A keyword bubble is priced in minutes. A service-word name is priced by the businesses that need it.”

Sources and method

Registry counts are the .si registry's published totals for 23 September and 5 October 2026. Registrar share and the keyword percentage come from registrar and third-party reporting covering the same period. Sale figures are reports from registrar auctions and marketplaces for the first week of October 2026. Availability results are our own checks against registry RDAP data in the first half of October — a reseller search page is not evidence, in either direction.