.si
| Introduced | 1993 |
|---|---|
| TLD type | Country code top-level domain |
| Status | Active |
| Registry | ARNES |
| Sponsor | Republic of Slovenia |
| Intended use | Entities connected with  Slovenia
|
| Actual use | Very popular in Slovenia |
| Registered domains | 119,774 (July 2016) |
| Registration restrictions | None |
| Structure | Registrations are taken directly at second level. |
| Documents | SI TLD regulations |
| Dispute policies | ADR |
| Website | registry.si |
.si is the Internet country code top-level domain (ccTLD) for Slovenia. It is administered by the ARNES, the Academic and Research Network of Slovenia. In 2010, the registry has hosted 80,000 domain names. In 2012, that number increased to 100,000 .si domain names when the domain zj.si was registered by Jasico d.o.o.
Domain hacks for the .si TLD are quite popular, since si is second person singular of the to be verb in the Slovene language. As such, many domains have been created that are using such domain hack, one of the most popular being zadovoljna.si ("You are pleased", female form).
Pepsi also has a pep.si TLD to shorten links.
Mexican politicians have also been using .si as part of domain hacks, because sí is Spanish for yes and this TLD allows for domain names that basically translate to "<XYZ>, yes!". One example is 2012 presidential candidate Andrés Manuel López Obrador's website, amlo.si.
According to research by McAfee performed in 2010, the Slovenian TLD is the tenth most secure.
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