16 name sets, from first names, two- and three-letter strings and numbers to states, countries, elements, animals and colors, checked in all three extensions: registry dates, what is on the site, and the asking price from the domain's own landing page first, marketplaces second.
Every .si in our data with a buy-now price on its own landing page, or that is free to register, gets a score out of 100:
Each day a small date-based nudge reshuffles the strongest names, so the line-up changes daily. Picks rotate through the name sets so no one set fills the list, and every fifth pick is a name you can register today. First names show their US popularity rank. Implausible prices are left out. Prices are asks, not sales: confirm on the landing page before you buy.
Probed.si checks tens of thousands of names in .si, .ai and .com: who owns them, when they were registered, what is on the site and what they cost. Here is where to start, depending on what you want to do.
*ia, ??) and see it in .si, .ai and .com at once: who has it, whether it's for sale, the asking price, or whether you can register it today.
03Explore a name setPick one of 16 sets, from first names and 3-letter names to colors, numbers and .si domain hacks, to see how much is taken, typical prices, registration waves and who holds the names.
04Catch a dropDropping lists names the registry has confirmed are being deleted, plus almost-expired names to watch, with how each extension's drop cycle works and where to backorder .si.
05Track new registrationsNewly registered .Si lists every name in our sets registered since September 1, 2026, day by day, so you can see what's being picked up and what's already listed for resale.
06See what's being builtDeveloped .Si shows real .si websites built for an international audience, not sale pages, so you can see how the extension is actually being used.
07Follow the communityThe NamePros .si thread is the go-to place to keep up with and discuss .si. The .Si Community tab summarizes it: every sale and domain mentioned, plus the domainers to follow on X.
Every domain has a Probed report. Click a name anywhere on the site to see its status, price and venues in all three extensions, registration and expiry dates, and its price history. Probed.si is a beta research project: prices change daily and some marketplace listings are false, so read the caveats and confirm ownership before you buy.
Every domain registered in each extension, not just the names researched here. Each chart has its own scale: .com is counted in hundreds of millions, .ai and .si in hundreds of thousands. Hover a point for the date and source.
Each name set has its own page with registration trends, pricing, who holds the names and, for states, countries and elements, the animated registration maps.
Every name set Probed.si tracks, one tile each. Click a tile to see who owns its names in .si, .ai and .com, when they were registered and what they ask, or use Search this set to open Find a domain with that set selected.
What a visitor sees on each domain today. Site scans cover first names and two-letter names in all three extensions. For three-letter names, states and countries the scan recorded sale evidence only, so those show as for sale, no sale sign, or no listing found.
Registry creation dates as they stand today. A dropped and re-registered name shows its newest date, so older years are undercounted. .ai dates of 2017-12-16 mean "on or before" the start of the current .ai registry system.
Every name in this set lighting up in the order it was registered, with the asking price tagged as each one appears. Each animation ends on a "For sale now" map shaded by price.
All 118 chemical elements lighting up in the order their domain was registered. Each square shows the registration year and, if the name is for sale, its asking price. The animation ends on a "For sale now" table shaded by price.
Prices are taken from the best evidence available: the domain's own landing page first, then Sedo, Afternic and other venues. When venues disagree, the landing page wins. This section shows how often that happens.
Registrars behind the domains currently listed for sale. A few investor-friendly registrars hold most of the speculative .si stock.
For names listed for sale in one extension, what the same name is doing in the other two. A developed .com usually means an established brand already owns the name elsewhere.
Median asking price and share listed for sale in every name set side by side.
Search every name Probed.si has checked. Type a name, or a pattern: * stands for any letters and ? for exactly one (*ia, ??, mia.ai). Or start from a quick search below, then narrow it with the filters: price range, registration year, first-name popularity, length, what the same name is doing in other extensions, and which price sources count (landing page, Sedo, Afternic). Sort by includes landing-page price, the most accurate price we have. Click any result to open its Probed report.
| Domain | Name rank | Status | Price | vs similar | Registered | Other extensions |
|---|
The assistant searches the same data as the finder and explains its picks: price against similar names, which evidence the price comes from, and who already uses the name in other extensions.
Runs on your own Claude account. Results come from the scan data on this page, so recheck availability and price on the domain itself before buying.
Only Dropping now names are confirmed by the registry to be in the delete cycle (pending delete or redemption). The other stages are almost expired names that have not expired: most get renewed, and .com and .ai names usually renew automatically on their expiry date. Treat them as a watch list, not a sure thing. How the .si, .com and .ai drop cycles work, and where to backorder ↓
An unrenewed .si name is released about 30 days after it expires: it sits in a 30-day quarantine, then goes to whoever registers it first. That is less than half the wait for .com or .ai, which run through grace, redemption and a locked pending-delete phase.
.com grace is shown at its 45-day maximum (registrars choose 0–45). The .ai stages are typical values and vary by source. Most .ai names are sold in a Namecheap registry auction before they reach the drop.
pending delete.redemption period.| Service | Cost | How it works | Track record |
|---|---|---|---|
| Backorders.Domains recommended | €50 flat | Sole backorder wins at €50; several orders → 7-day proxy auction | Caught fanta.si and 8 of 12 top .si drops in mid-2026 (NamePros) |
| Regery backup | Not published | Drop-catches .si, checking every 30 minutes | Fast .si registrations; one reported pending-delete glitch |
| DomainExchange.si | Not published | Reported to take .si backorders; mainly a .si marketplace with escrow | Unproven |
| BB Online | Free watch; ~$144 if caught | Registers for the first person who asked; no auction | No public .si record |
| notrenewing.com | ~$99 a name (2025) | Buy from owners who won't renew, before the drop | Small listings |
.ai is different: expiring .ai names go to the registry’s daily auction on Namecheap Market before they can drop, so bid there rather than backordering. Not for .si: Dynadot backorders, DropCatch, NameJet and NeoServ. Tips: place the backorder while the name is in quarantine, and use two services for a name you really want. Only one registration can win, so a second order is a backup, not a bid against yourself. For .com, use DropCatch, SnapNames or NameJet.
| RDAP status | What it means for .si |
|---|---|
pending delete | Expired and in quarantine. Free about 30 days after the expiry date |
pending delete + redemption period | Deleted early by the registrar. Free 30 days after the status changed |
inactive | No name servers. Still registered, not dropping |
client delete prohibited | Registrar lock against deletion. The expiry date still applies |
Past expiry, still active | Usually renewed and RDAP not refreshed yet. Re-check before you backorder |
Sources: Register.si general terms (5.3–6.2) · Register.si statuses · OpusDNS .si · OpusDNS .ai · Openprovider · NEOSERV · OSIR (.com) · DomainDetails · Domain Name Wire (.ai auctions) · NamePros: catching .si drops
Every .si in Probed.si's name sets registered since September 1, 2026, grouped by the day it was registered. That window covers the whole "Super Intelligence" rush. Open a day to see its names, sort them, and click any name for its Probed report.
Live .si websites built for an international audience rather than for Slovenia. Every registered .si in the research, across all the name sets, was visited, and each site’s language, market and purpose recorded. Sale pages and parked “for sale” landers are left out: this tab shows how .si is actually being built on and used.
A page-by-page reading of the NamePros thread "Showcase your .SI domains – Super Intelligence": every page, every post, every domain mentioned and every sale reported, from the first post in June 2024 to today. All credit for the spark goes to the legendary Lox. On June 23, 2024 the legend himself spotted that Microsoft owns copilot.si and shared it on NamePros as ".si (super intelligence)". That single find is where the whole .si story begins.
The go-to place to follow and discuss .siShowcase your .SI domains – Super Intelligencehttps://www.namepros.com/threads/showcase-your-si-domains-super-intelligence.1328785/Open thread ↗Keep up with .si on NamePros. This thread is where the .si community follows new registrations, sales, registry news and buyer activity day to day, and where investors trade ideas. To stay current or join the conversation, start there. Probed.si summarizes the thread but doesn't replace it.
Each forum page holds about 20 posts, so pages per month is a direct measure of how much the community was talking.
Euro prices are converted at €1 = $1.16 for sorting and totals; the original currency is shown. "Reported" means a member relayed the figure without proof. Benchmark rows are .ai and .com sales the thread cited for comparison. A repeat report is the same sale posted again; it is left out of counts and totals.
The NamePros thread is the main hub for .si discussion, and these six accounts carry it onto X. Each X button opens their latest .si posts, newest first.
Bought betty.si for $17,500 in October 2026 (he owns betty.ai) and dozens more .si names; DomainGang counted 63 .si domains and $45,987 spent by Oct 8. Still calls .com king but says quality .ai and .si make sense.
A long-time domain investor who brings a market-watcher's eye to .si: he posts .si sales, research into who is buying, and commentary on where the extension is heading.
Started compiling every ".si (Superintelligence)" domain in July 2024, weeks after the NamePros thread opened. Claims 95,000+ .si registered since then and predicted resales would reach five figures.
Posted "The .si hype might come true after all!" in May 2026, then reported $30,000 of .si sales at Sedo in one day. Later said price hikes by sellers were slowing sales.
Sold rebellion.si for $28,700 on Oct 15, 2026. Bought name.si in May 2026, posts registry statistics such as how many two-letter .si were registered each year, and holds a sizeable share of three-digit .si names.
Has covered the .si rush almost daily: registrations peaking at 20,286 on Oct 5, 2026 and falling 57.6% by Oct 9, a roundup of 24 Sedo .si sales led by hollywood.si ($30,000) and stocks.si ($25,000), Rick Schwartz's 63 .si domains, and an interview with a Slovenian founder on how locals see the "SI" craze.
Summaries come from the NamePros thread and DomainGang articles (Oct 7–13, 2026).
Where each number on this site comes from, and what the labels mean.