is the registry for .si top-level domain name. It operates within Academic and Research Network of Slovenia.

106 .si domain registrars
1.738 new domains in previous month
123.579 .si domains registered in numbers



S and I can mean a lot, if they're after the dot is a webpage aiming to promote the use of local .si domain names. If your target is Slovenian market, .si domain name is the best choice.