Summary

  • The root-zone entry for .su names the Russian Institute for Development of Public Networks as manager and records the domain as Delegated, while stating no designation decision, no transfer rationale and no retention basis.
  • RIPN's own site dates its .su registry role two incompatible ways — an entrustment in 1993 and a takeover on 1 August 2020 — so its published history documents continuous service, not documented title.

The authoritative entry for .su in the root-zone database is a short page with a long shadow. As displayed on 12 November 2026, the .su record classifies the domain as an active country-code top-level domain, puts the Russian Institute for Development of Public Networks (ROSNIIROS) in the manager field, records the technical status as Delegated, names the Technical Center of Internet as technical contact, and carries a last-updated date of 5 August 2026. What it does not carry is a reason. There is no designation decision, no transfer rationale, no retention basis. The record tells you who answers the telephone and that the line is live. It does not tell you who handed over the keys.

Set the .ru record beside it and the picture sharpens in an unexpected direction. .ru's manager is the Coordination Center for TLD RU, its entry was last updated on 21 August 2026, and its technical contact is the same Technical Center of Internet. The authoritative nameserver set is the same in both entries. Two administrative names, one technical operator, and the newer delegation carrying the address that also serves the older one. That is what the database shows. It is not a finding about who controls what.

The closest document to a deed is a memo written before most of the current internet had a business model. RFC 1591, dated March 1994, says the designated manager of a country-code domain is the trustee of the top-level domain, obliged to serve both the nation and the global internet community and to act equitably, justly, honestly and competently. Trusteeship is a duty, not a title. The same memo sets the conditions under which a delegation moves — the old and the new organisation must both confirm that the transfer is mutually agreed — and the condition under which it can be pulled: persistent operational problems. Then it draws a boundary that has aged into the centre of this story. IANA, it says, is not responsible for deciding what is or is not a country. The framework that governs the delegation has no clause for the disappearance of the thing the delegation was named after.

So what does RIPN say for itself? Its current history page dates the organisation to 1992, established by the State Committee of the RSFSR for Science and Higher Education and registered as a non-profit. It records a 4 December 1993 agreement that assigned administration of the .ru zone to RIPN, a stretch as the only .ru registrar until 2001, and the creation of RU-NIC in April 2000. Supporting that account is a scanned protocol of the same date, published on the same site, in which responsibility for the RU domain is to be handled by RosNIIROS as a non-commercial independent organisation, and in which RosNIIROS is responsible for the SU domain and performed the IP Registry role for xSU/RU. Read the form of the thing: this is a protocol of IP service providers. It is evidence of what operators agreed among themselves. It is not a delegation instrument issued by anyone who holds the root zone.

The founding story is not even internally stable. A legacy About page names the Higher School Committee of Russia, the Russian Research Centre Kurchatov Institute and the Computer Centre of Kurchatov Institute. The current history page names a State Committee of the RSFSR. Both are RIPN describing RIPN. The two formulations are reported here as displayed, not reconciled, because nothing on the site reconciles them and no external document in this set does either.

The .su chronology adds a third layer rather than settling the first two. The domain's own history page says .su appeared on 19 September 1990 after registration by the Soviet Union Association of UNIX Users, that administration of .su was entrusted to RIPN in 1993, that new second-level registrations under .su were discontinued once .ru appeared, and that registration was later reopened. Entrusted is the operative word, and it is used without a document.

Now the sentence that breaks the arithmetic. On the page explaining how to become a registrar, RIPN writes: "From 1 August 2020 RIPN took over as the registry of the .SU top-level domain." On its .su page it writes: "Since 1993 RIPN has been the registry for the .SU TLD." The same organisation, the same domain, two dates twenty-seven years apart. One of those sentences cannot be true in the sense a reader will take it. Either 2020 describes a reassignment inside a cluster of related organisations that share one technical operator, in which case the phrase "took over as the registry" is doing work its authors did not intend, or the 1993 claim has been flattened. Nothing published on the site says which, and the priority here is not to guess. An organisation that cannot put its own role on a single date cannot ask a reader to accept continuity as an established fact rather than as an operational observation.

The same registrar page also calls RIPN "the official owner of the .SU ccTLD database" and says it is authorised to manage .su according to the registration record in the International Root Zone Database published by PTI. Ownership is not what RFC 1591 assigns. A manager administering a database and a party owning a namespace are different legal animals, and the record supports only the first. Report the phrase as RIPN's own characterisation; do not credit it as status.

Its About page is more modest and more useful. RIPN says it has developed and administered .su since 1993 and lists what it does now: the .su TLD registry, a local internet registry leasing IPv4 and IPv6 blocks under RIPE NCC rules, sponsorship of PI addresses and ASNs, and partner support. It makes no claim to a current .ru administration role. Its LIR page sets out the address-space side of that business. And a statement dated 13 March 2025 says RosNIIROS is the .su registry and has no plans to shut the ccTLD down.

One part of the organisation's public surface is unavailable. The site at www.ripn.net returned HTTP 502 on 12 November 2026, and its content was not read. Whatever self-presentation lives there is missing from this account, and no conclusion here should be read as a claim about what it does or does not say.

What the documents support is narrower than the marketing and more interesting than a scandal. .su has a designated manager, a live delegation and a technical operator that also serves .ru. It has a manager that publishes a running account of its own history and gets the central date of that history wrong in one of two directions. It has a governing memo that assigns duties without assigning title, and that explicitly refuses to adjudicate the one question this particular domain raises. The result is a delegation whose accountability is operational and whose paperwork is a blank.

That is not unusual in the legacy ccTLD space, and it is exactly why the blank is worth naming: continuity of service is a fact you can verify from a nameserver, while continuity of authority is a claim that has to be produced, and here it has not been.