Put SI in your address.
In AI circles, “SI” is shorthand for superintelligence. Register yourbrand.si, then point it wherever your product lives.
€29 / year, VAT included
- Registered in your name
- DNS included
- Invoice for every order
- Country-code domain of Slovenia, run by the national registry
- Registered through Openprovider
- Payments by Stripe
- Open to individuals and companies worldwide
Why .si
Why .si for an AI company
.ai → .si. In AI circles, “SI” is shorthand for superintelligence. The domain itself is Slovenia's country code and has no official connection to AI.
It reads as “SI”
The .si ending is Slovenia's country code, but in AI circles “SI” is shorthand for superintelligence. A name like yourbrand.si carries that meaning in the address itself.
Short names, worth checking
The name you want may be taken on .com or .ai and still be free on .si. We cannot promise any particular name is available, but the search tells you straight away.
Open to anyone, anywhere
You do not need to live in Slovenia or have a Slovenian company. The registry's rules let individuals and companies from any country hold a .si domain.
One clear price
You see the price before you create an account, and it includes VAT. A registration is for one year.
Illustration with example data: the DNS records of example.si in the dashboard, an A record pointing to 203.0.113.10, a CNAME for www and an MX record.
What you get
Everything included
DNS management
A DNS zone is created with your domain. Add and remove A, AAAA, CNAME, MX and TXT records in the dashboard.
Your dashboard
See your domains, expiry dates and orders in one place.
You are the registrant
The domain is registered in your name or your company's. We act as the reseller.
Standard DNS
Point the domain at any host or email provider with ordinary DNS records.
An invoice for every order
Each order gets an invoice, emailed to you and available in your dashboard.
Renewal reminders
We email you about 30 and 7 days before a domain expires, so you can renew in time.
For agents
Agent-ready: manage your domain from Claude or Cursor
Connect an AI agent over MCP to check names, edit DNS records and prepare purchases. Add the server with one command, and choose what the agent may do.
Three permissions, you choose
- readSee your domains, DNS records and orders; check availability and prices.
- dns:writeAdd and delete DNS records on your domains.
- purchasePrepare registrations and renewals. It only returns links; you always pay yourself.
A human always confirms and pays. An agent only gets a link; you review the order and pay on Stripe yourself.
How it worksIllustration with example data: a terminal where the command claude mcp add connects the DomainSpace server, then an agent is asked to point example.si at 203.0.113.10, calls the add_dns_record tool and reports it done.
Illustration with example data
Three steps
How it works
Search
Type the name you want. We check whether it is free.
Create an account and add registrant details
The registrant is the legal holder of the domain, so the details must be accurate.
Pay and connect
Pay by card through Stripe. The domain is registered right after payment and a DNS zone is created, ready for your records.
Pricing
One price, nothing hidden
One price per one-year registration, in euro.
€29per year, VAT included
- Registration for one year
- DNS zone and record management
- Registered in your name or your company's
- An invoice for every order
- Renewal reminders by email
Renews at the same price
Each purchase registers the domain for one year.
FAQ
Questions
What is .si?
.si is the country-code top-level domain of Slovenia, run by the national registry, Register.si, which is part of ARNES (the Academic and Research Network of Slovenia).
Does .si officially mean superintelligence?
No. .si is Slovenia's country code and has no official connection to AI. The appeal is that “SI” is used as shorthand for superintelligence in AI circles, in the same way .ai (Anguilla's code) appeals to AI companies.
Who are you? Are you affiliated with the registry?
We are an independent reseller of .si domains. We are not affiliated with Register.si or ARNES, nor with any AI company. We register domains through the registrar platform Openprovider and take payment through Stripe.
Who can register a .si domain?
Individuals and companies. The registry's terms define a domain holder as a natural or legal person and do not require you to live in or be established in Slovenia. You must give accurate registrant details.
Which characters can I use?
Letters a-z, digits and hyphens, plus the Slovenian letters č, š and ž. The registry allows other Latin characters too, but we only accept these so that a name you pay for is not rejected afterwards.
How long does a registration last?
The registry allows registrations of one to five years. We currently sell one year per purchase.
What happens when a domain expires?
Under the registry's rules, a domain that is not renewed enters a quarantine period of up to 30 days and is then deleted. Your registrar may charge a fee to restore a domain during that time. Renew before the expiry date shown in your dashboard: you can do it there from 90 days before expiry, and we email you reminders about 30 and 7 days before.
Can I move my domain to another registrar?
Registry rules allow a domain holder to change registrar, and changing registrar does not alter the registration period. Our registrar platform requires the domain to be at least 60 days old and unlocked, plus an authorisation (EPP) code. Transferring out is not self-service in the dashboard yet.
Is the price final?
Yes. Prices are in euro and include VAT. The price you see is the price you pay at checkout.
Can I cancel and get my money back?
If we cannot register your domain after you paid (for example because someone else registered it in the meantime), you are refunded in full automatically. If you are a consumer in the EU you have a 14-day right of withdrawal. Because we register the domain immediately after payment, you are asked at checkout to consent to that and to acknowledge that the right ends once the service has been fully performed. Details are in our terms of service.
Find your name
Search for it now. If it is free, registering takes a few steps.