Summary

  • IANA’s current record dates .si to 1 April 1992, while ARNES says the public institution was established on 7 May and took on the registry role.
  • ARNES later recalled that a group of existing .yu names moved to .si near the end of 1992; the account does not establish a complete or simultaneous migration.

ARNES later recalled an unexpected constraint: Slovenia first wanted .sl, but Sierra Leone had already registered that label. Slovenian institutions were already using names under Yugoslavia’s .yu domain. The eventual choice of .si was therefore followed by a small, concrete transition for research and university systems—not a fresh naming space without users.

The dates fit on one short calendar, but they describe different acts. On 1 April 1992, .si was entered in the DNS root according to ARNES’s thirtieth-anniversary account. IANA’s current delegation record lists the same registration date. On 7 May, a government decree established ARNES, the Academic and Research Network of Slovenia. ARNES says that one of its assigned duties was managing Slovenia’s address space in computer networks, making it the registry for .si.

The 36-day gap matters because entering a name in the shared root and running the registry beneath it are different jobs. The first records a label in the common DNS system; the second requires an institution to maintain registrations and operating rules. The records do not say ARNES performed every later registry task on 1 April, or identify who handled each technical step that day.

There was also an earlier namespace. ARNES says that Slovenia had used Yugoslavia’s .yu domain, whose administration was located at the Jožef Stefan Institute. In a 2022 interview, then-director Marko Bonač recalled that existing names were moved from .yu to .si at the end of 1992. He thought the first group contained ten names and listed them. That recollection gives the root-zone date a practical sequel, but it is not a contemporary transfer log. It cannot tell us that every .yu name moved then, or that all ten changed in one transaction.

The distinction matters because a top-level label is not a network rollout. ARNES’s anniversary account explicitly cautions that .si’s thirtieth anniversary did not mean thirty years of a Slovenian web. It dates the first Slovenian web page to November 1993. Nor does the .si record show how many institutions or people could reach the Internet in April 1992. The domain answered a naming question; it did not, by itself, establish access service, connectivity or a public web presence.

Read as a sequence, the records show a namespace becoming identifiable before its domestic registry was formally created, followed by an attributed account of existing names being transferred into it. Each milestone changed a different layer: the root’s list of delegated domains, the national institution responsible for registration, and the names used by particular organizations. The sequence is more informative than a single birthday because it shows that Internet identity, administration and use had to be assembled separately.

Sources: ARNES on the .si domain’s 30th anniversary; ARNES’s account of its establishment and registry role; IANA’s .si delegation record; Slovenian Ministry of Culture profile of ARNES.