THE .SI FIELD GUIDE
Three-letter .si domains
Explore 17,576 three-letter a–z .si combinations. Test acronym meanings and pronunciation, then check official registration records for individual names.
Three-letter .si domains offer 17,576 lowercase a–z combinations. They can represent initials, acronyms or compact brand names, but each candidate needs an individual status and trademark check.
Ideas are not advertised as available. Check a name to retrieve its status. Counts describe combinations, not available inventory.
17,576Possible letter combinations
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What makes a good three-letter .si name?
Prefer a sequence with a clear reason to exist. Three initials may match a company or research project; a pronounceable consonant-vowel-consonant pattern may be easier to communicate aloud. Compare what people hear with what they type, especially when letters such as B, D, P and T are spoken over a call. Include the .si ending in your test. A memorable full address matters more than selecting the first unregistered combination.
Acronyms versus random combinations
A meaningful acronym starts with the words it represents, not with a speculative price. List possible expansions in the languages your audience uses. Search for established organizations, product abbreviations and unwanted meanings. A random string can still work as a coined brand, but you must explain it consistently and check confusing spellings. Neither a short length nor an unused registry record removes a trademark conflict.
How to check a three-letter domain
Browse one page at a time or search your preferred initials. The explorer checks selected candidates against Register.si and attaches a timestamp only after an actual lookup. Batch checks run in small groups to respect service limits; stop a scan if you have enough results. Open a candidate’s details to compare providers without creating a separate indexed search page. Recheck the exact spelling and checkout quote before you register.
Primary sources
Registry rules come from Register.si. Delegation comes from IANA. Provider details come from the provider. Availability is checked separately and can change at any time.
How we verify