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TLD typeCountry code top-level domain
SponsorRepublic of Slovenia
Intended useEntities connected with  Slovenia
Actual useVery popular in Slovenia
Registered domains119,774 (July 2016)[1]
Registration restrictionsNone[2]
StructureRegistrations are taken directly at second level.
DocumentsSI TLD regulations
Dispute policiesADR
Registry websiteregistry.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.[3] In 2012, that number increased to 100,000 .si domain names when the domain zj.si was registered by Jasico d.o.o.[1]

Domain hacks[edit]

Domain hacks for the .si TLD are quite popular, since si is second person singular of the verb to be in the Slovene language. As such, many domains have been created that are using such domain hacks, one of the most popular being zadovoljna.si ("You are pleased", female form).

also translates from Spanish as yes, so the TLD has been used by some Spanish-language websites. A notable example of this is the Mexican political party MORENA, whose website is found at morena.si.

Pepsi also has a pep.si TLD to shorten links.


According to research by McAfee performed in 2010, the Slovenian TLD is the tenth most secure.[4]

The longest domain name[edit]

The longest domain name for .si was registered on 5. 6. 2020. You can visit it here: brezveznadomenasamozatodadrzimorekordzanajdaljsodomenoskoncnico.si.

What does it mean in English? The unbound domain just to hold the record for the longest domain with the extension.


  1. ^ a b "Registrirana 100 000-a domena pod .si (100 000th domain registered under .si)" (in Slovenian). Arnes. 27 January 2012. Archived from the original on 9 March 2013. Retrieved 9 February 2012.
  2. ^ "Who is entitled to register .si domain name?". Arnes. Retrieved 28 March 2012.
  3. ^ "80,000 .si domen" (in Slovenian). Arnes. 19 May 2010. Archived from the original on 9 March 2013. Retrieved 6 July 2010.
  4. ^ "Mapping the Mal Web: The world's riskiest domains" (PDF). McAfee. Retrieved 28 March 2012.

External links[edit]