Published: 17.10.2026
The .si extension is the country-code domain of Slovenia, a small country in Central Europe with Alpine mountains in the north and a short coastline on the Adriatic Sea. Slovene companies, hotels, food producers, schools and public initiatives use it to show that they are based in Slovenia and that they serve Slovene visitors and customers. The capital is Ljubljana, and the official language is Slovene. Use the availability form just below this text to see whether your name in .si is still free.
Check if a .si domain is available .si Check
A short history
Slovenia received its national code when the country began to develop its own internet presence, at a time when the network was used largely by universities and research groups. As Slovene companies and public bodies moved online, the zone grew to cover shops, tourism businesses and professional services. Slovenia has been a member of the European Union since 2004, and the zone is a familiar part of the national market today.
Who runs it
The .si zone is managed by a national registry, which keeps the central database of names and sets the rules for registration. Accredited registrars sell names to customers and send the orders on to the registry. Because the rules come from the registry, its official terms are the place to check eligibility, holder data and transfers before you buy a name.
Rules in practice
- Holder conditions: the registry may set requirements for who can hold a .si name, so check the current terms before you order.
- Contact data: the holder details must be complete and correct, and they can be verified when the registry requires it.
- Length and characters: a name can be up to 63 characters long and uses letters, digits and hyphens.
- Renewal and changes: the domain must be renewed on time, and a change of holder should follow the registry procedure.
Who uses .si
- Slovene companies of every size, from family firms to larger businesses.
- Hotels, spas, mountain lodges and tourism operators that promote Slovenia to visitors.
- Wine cellars, cheese dairies and other food producers with a Slovene customer base.
- Schools, sports clubs, cultural institutions and local associations with a Slovene audience.
Strengths
- The two-letter ending matches the country's international code, so it is a clear and short signal of a Slovene base.
- Search engines can use a country-code ending as one hint about the audience, so Slovene-language content may be easier to match with local searches.
- The address is easy to read on signs, vehicles and printed materials, and at home it needs little explanation.
Things to keep in mind
- Because the ending is tied to Slovenia, a business with most of its customers abroad may also need a generic address.
- If your audience extends to neighbouring countries, think about whether a .si name alone reaches them well enough.
- Good short names may already be registered, so prepare descriptive alternatives.
- Slovene letters such as č, š and ž are not part of a standard domain name, so decide how to spell names that contain them.
Tips before you register
- Check the same name in .com and decide whether a second address is worth owning.
- Enter the company or holder details exactly as they appear in your official records.
- Prepare Slovene content, clear contact pages and the company information that Slovene websites are expected to show.
- Host the site in Europe so that pages load quickly for visitors in Slovenia.
- Set up mail authentication records and keep the renewal reminder active.
Frequently asked questions
Do I need a Slovene company to register .si? The registry sets conditions for holders, and they may depend on your situation. Check the current rules before you order.
Can an English-language site use .si? Yes, the ending does not fix the language. Slovene visitors will still appreciate some Slovene content.
Does .si help a site appear in Slovene search results? It is a useful location signal, but clear content in Slovene, fast pages and local references usually count for more.
