Summary

  • AS210972 has not been visible in the global routing table since 16 April 2026, yet its RIPE aut-num object still carries status ASSIGNED with a last-modified date of 9 September 2023.
  • The role object TA8097-RIPE, "Tideo Administration", remains the sole admin-c and tech-c for the network and has not been touched since 28 July 2021.
  • The parent organisation object ORG-TA1587-RIPE (Tideo ApS, Danish registration number 38351222) was last modified on 13 May 2026 — the only 2026 timestamp in the object set.
  • No evidence in public mirrors shows termination, transfer or deletion of any object; the registry footprint simply outlived the operation.

The central finding of this briefing is negative, and the negative finding is the news. When AS210972 stopped announcing prefixes on 16 April 2026, the natural expectation would be a registry echo: a status change, a deletion request, a transfer, or at minimum a maintenance update. According to RIPE NCC's own statistics portal, the ASN is still listed as TIDEO-AS, held by Tideo ApS, with status ALLOCATED/ASSIGNED and a registration date of 30 July 2021 [https://stat.ripe.net/resource/AS210972]. Hurricane Electric's routing data confirms the operational side: the ASN has not been visible in the global routing table since 16 April 2026 [https://ipv4.bgp.he.net/AS210972].

The registry objects tell a matching story of inaction. Mirrored copies of the aut-num consistently show admin-c and tech-c both set to TA8097-RIPE, maintainers RIPE-NCC-END-MNT, TIDEODK-MNT and wnb-aps, status ASSIGNED, and a last-modified timestamp of 9 September 2023 [https://whois.ipip.net/AS210972]. The role object itself — "Tideo Administration", address Tingvejen 30G, 6500 Vojens — was created and last modified on the same day in 2021 and has not changed since [https://whois.ipip.net/AS210972]. The only object with a 2026 modification date is the parent organisation ORG-TA1587-RIPE, last modified 13 May 2026 [https://whois.ipip.net/AS210972]; the article cannot determine from public sources what that modification changed.

Aggregators diverge in how they label this state. IPinfo tags AS210972 as "Inactive" with zero IPv4 and IPv6 addresses [https://ipinfo.io/AS210972] — an operational label, not a registry status. CIDR Report labels the network "NOT Announced" while quoting an aut-num that remains ASSIGNED [https://www.cidr-report.org/cgi-bin/as-report?as=AS210972&view=2.0]. IPGeolocation likewise shows zero announced routes [https://ipgeolocation.io/browse/asn/AS210972]. The gap between those labels and the RIPE status value is the point: no operator action and no registry action has reconciled the two.

An evidence boundary must be stated plainly. The official RIPE Database query interface at apps.db.ripe.net could not be retrieved for this briefing; it is a dynamic query UI that does not render through search. Every registry value cited here comes from third-party mirrors and aggregators — RIPEstat, CIDR Report, IPGeolocation, IPIP.NET, Hurricane Electric — which may hold cached snapshots; the official query interface at apps.db.ripe.net could not be retrieved for AS210972 [https://apps.db.ripe.net/db-web-ui/query?searchtext=AS210972] or for TA8097-RIPE [https://apps.db.ripe.net/db-web-ui/query?searchtext=TA8097-RIPE]. The internal consistency across independent mirrors is strong, but none of them is the canonical record, and this article does not claim to have inspected it.

A prior briefing on this subject, published on 28 September 2026, examined who answers for a dormant Danish ASN and noted that TA8097-RIPE names no individual and has no abuse-mailbox attribute, with the abuse contact resolving through a separate object, ACRO42495-RIPE [https://btw.media/en/tideo-administration-2026]. What that article could not establish was whether the registry had since moved. It had not. The contribution of this briefing is the documented stillness: three months after routing withdrawal, and with the business publicly closed since 1 April 2025, every object that could be updated was not.