Why choose .si for a company or startup
SI stands for super intelligence. The .si ending brings that direction into a company or product address, much as .ai points to artificial intelligence.
This is already part of technology company naming. Meta has Meta Superintelligence Labs, Safe Superintelligence puts the goal in its company name, and the business behind Grok now uses SpaceXSI. These company sources were checked on 13 October 2026.
Names such as Savants.si for expertise, Epochs.si for model training and Lakes.si for data connect that direction with a product’s work. The word before the dot still needs to fit the business. The name check guide covers existing company and trade mark uses.
Companies using .si
- Petrol, the energy and fuel retailer, uses petrol.si for a customer website.
- NLB, the bank, uses nlb.si for its personal and business banking website.
- Mercator, the supermarket retailer, uses mercator.si for its shopping information and offers.
These customer websites were checked on 13 October 2026.
What .si actually is
.si is a country-code domain, managed by ARNES. Its official IANA record gives the registry details. This status was checked on 13 October 2026.
A .si can be an address for a website or email, once the relevant services are set up. The word and the ending together form the exact name you control. Buying Savants.si, for example, does not include Savants on another ending.
Who can hold a .si domain
People and companies can hold .si names. The registry’s general terms define holders as natural or legal persons and set no nationality condition. Registrations are managed through registrars. These terms were checked on 13 October 2026.
That eligibility does not give permission to use someone else’s name. The name check guide links official company and trade mark registers for researching a shortlist before buying.
What it costs to hold .si
The cost of buying an already-owned .si is the seller’s price or an agreed offer. Renewal is a separate ongoing cost quoted by your registrar. Check that quote for the exact name and confirm the currency and any mandatory fees before paying.
The registry’s registration terms allow renewable periods of one to five years. The period offered and billed by your registrar needs checking separately.
What happens when an existing .si changes hands
Changing the holder and changing the registrar are separate transactions. Under the .si terms, neither change restarts the registration period. Confirm the remaining term and delivery arrangements with the marketplace and receiving registrar.
The premium-domain buying guide explains the broader payment and delivery process. The actual sale terms determine what is included; a domain-only purchase does not include a built product or website.
Using .si for a worldwide business
A worldwide naming idea and a country-code ending’s search treatment are separate considerations. Google describes country codes as geographic signals in its geographic-targeting guidance. Its list of exceptions includes .ai and .co, but not .si, when checked on 13 October 2026.
That gives a founder a reason to consider geographic search alongside the name’s meaning. The letters alone do not establish where a website will rank. My domain-name guide compares the wider naming choices.
.si names in the Onomora collection
Savants.si suggests expertise, Corrects.si suggests correction, and Lakes.si can suggest data lakes. Those are possible product ideas. These names are available by offer:
Browse the .si collection for the full current selection and each name’s marketplace route.
Common questions
What does SI mean in technology?
SI is used for super intelligence. Technology companies are pursuing it and using it in their names, including Safe Superintelligence. The .si domain ending itself remains a country-code domain managed by ARNES.
Can a person or company hold a .si domain?
The .si registry’s terms define holders as people or legal entities, with no nationality condition. The registrar and registry rules apply to the exact name.
Does buying a .si restart its registration period?
The registry’s terms say changing the holder or registrar leaves the registration period unchanged. Check the expiry date and the receiving registrar’s renewal arrangements when buying an existing name.
Does a .si domain include the matching .ai?
Each ending is a separate registration. Some words appear in both collections, but a purchase includes only the domains named in the agreement. Check the individual sale pages and ask about any proposed pair.
This guide is not legal, tax or financial advice. For those questions, speak to a qualified professional where you trade.
Sources: IANA, .si delegation record; Register.si, registration and transfer terms; Google, geographic targeting; Meta, superintelligence work and Meta Superintelligence Labs; Safe Superintelligence, company and purpose; SpaceXSI, company identity and Grok.