Expiring .si Domains for Sale
All .si domains are just $99. No negotiation, no hidden fees.
.si is the country code TLD for Slovenia, delegated in April 1992 and run by ARNES, the country's academic and research network. Like .io and .co before it, most of the current interest has very little to do with the country — .si names are registered and traded internationally, through registrars like Dynadot and Openprovider.
Two things are driving the demand. The first is "SI" read as an abbreviation for superintelligence, and the .si names changing hands right now lean heavily toward AI and agent branding. The second is language: "si" means yes in Spanish and Italian, and it is a Slovenian word too, so the extension carries a plain meaning for a far bigger audience than Slovenia on its own.
It is also just two letters. A four-letter label in front of it gives you a seven-character address, and those disappeared from .com a long time ago.
One thing to know before you buy. Almost all .si inventory on the market today was registered inside the last year, during a fast speculative run, so you are usually looking at a recent registration rather than an aged name with history behind it. That is not a reason to avoid it, but it is a reason to check the registration date on the listing and price the name on its own merits.
Why .si domains are valuable:
- Reads as "SI" for superintelligence, which is where the current demand sits
- "Si" means yes in Spanish, Italian and Slovenian
- Only two letters, so the finished address stays short
- Short, clean labels are still findable in a way they are not in .com
- Registry supports renewals from one to five years
Who should buy .si domains:
- AI and agent products that want the SI abbreviation
- Brands selling into Spanish or Italian speaking markets
- Anyone building in or for Slovenia
- Startups who want a seven-character URL
- Domain investors who follow short ccTLDs
.si turned over quickly in 2026, and a lot of those speculative registrations will not see a second renewal. When an owner decides to let one go, it lands on NotRenewing at a flat $99.
50 .si domains available
View all with filters →DemandGen.si
Automate your B2B pipeline growth
healthcareagent.si
AI-powered patient triage startup
ApiAgent.si
Automate API workflows with AI agents
Summarization.si
AI-powered content digest platform
SecurityAutomation.si
Slovenia's cyber defense innovators unite
Anonymization.si
Protect data privacy at scale
studyagent.si
AI-powered tutoring startup, launch-ready
RobotSimulation.si
Train AI robots before real-world deployment
insightagent.si
Deploy AI-driven analytics copilots
Prediccion.si
Forecast platforms for Spanish-speaking markets
Personalizer.si
Deliver tailored experiences, built to convert
Subtitler.si
Auto-caption videos in any language
AssistantAgent.si
Deploy AI agents for Slovenian enterprises
dicom.si
Medical imaging software startup
aqar.si
Real estate listings across the Gulf
pwrx.si
Power exchange platform branding
sarj.si
Electric vehicle charging network brand
securitycode.si
Protect two-factor authentication platforms
soq.si
Sonic branding for Slovenian tech startups
youness.si
Personal brand for founders named Youness
ineed.si
Find exactly what you're missing
boty.si
Automate workflows with clever bots
capitalagent.si
Automate wealth management for high-net-worth clients
rqs.si
Brand a quantum research startup
phar.si
Pharmacy tech startup branding
solr.si
Search indexing for Slovenian enterprises
addme.si
Build a friend-finding social app
fkr.si
Branding for a bold Slovak venture
aimx.si
Mix AI into every workflow
linkr.si
Shorten links, brand every click
adsx.si
Launch a programmatic ad exchange brand
unitypoint.si
Slovenian healthcare network branding
legl.si
Streamlined legal practice management SaaS
matlab.si
Engineering simulation hub for Slovenia
ballon.si
Launch a party decor brand in Slovenia
dispo.si
Disposable vapes marketplace, scaled fast
dataplatform.si
Slovenian enterprise data infrastructure hub
fastbot.si
Automate workflows at lightning speed
zepi.si
Brand your Slovenian tech startup
ofsi.si
Brand your Slovenian startup instantly
financialplans.si
Build custom wealth roadmaps for clients
cila.si
Slovenian startup craving a short name
fari.si
Illuminate your brand's path forward
leso.si
Build a bilingual sourcing marketplace brand
veli.si
Fast-food delivery brand in Slovenia
agentonline.si
Deploy AI agents across Slovenia
esolutions.si
Digital transformation consultancy for Slovenia
filu.si
Digital platform for Slovenia's creators
FlowBit.si
Automate workflows one bit at a time
Hearable.si
Smart earbuds brand goes global