STELLANOR DATACENTERS PROPERTIES UK III LIMITED is a public intelligence profile built from public registry, operator, and source material. It summarizes what can be verified about the subject, separates public infrastructure facts from private relationship claims, and keeps contact handling behind the appropriate membership tier. The profile should be read as a monitoring baseline future events, not as a claim that every relationship or dependency is already proven.

STELLANOR DATACENTERS PROPERTIES UK III LIMITED

STELLANOR DATACENTERS PROPERTIES UK III LIMITED is an exact-name entry on RIPE NCC’s United Kingdom member list, but its precise corporate identity and any associated number resources remain unverified, while the wider Stellanor Datacenters platform has rapidly consolidated a significant UK colocation and connectivity estate through acquisitions exceeding £120 million and now operates eleven sites with 39 MVA of grid capacity.

Why It Matters

If the UK III identity proves to be a distinct resource-holding or contracting vehicle, it could reconfigure the routing and operational footprint attributed to other Stellanor entities. More broadly, the rapid consolidation of the underlying data-center estate—eleven UK sites with 39 MVA grid capacity and a transaction scale of over £120 million—means service continuity, power capacity, and interconnection choices for hundreds of enterprise customers may be influenced by the legal structures that house them.

What Public Sources Show

STELLANOR DATACENTERS PROPERTIES UK III LIMITED appears as an active entry on RIPE NCC’s United Kingdom member list, placing it inside the infrastructure of European internet number resource administration. Yet that registry identity does not currently map to a verified Companies House record, a known company number, or any specific IP address block or autonomous system. The exact wording “STELLANOR DATACENTERS PROPERTIES UK III LIMITED” is, for now, a administrative signal without a fully disclosed corporate skeleton—a gap that matters because the broader Stellanor Datacenters group has quickly assembled a substantial UK colocation and connectivity platform through a series of high-value acquisitions.

The registry presence matters directly to internet routing observers. If this member-list identity later appears on a RIPE database maintainer, route object, or RPKI publication, it could begin influencing how BGP announcements are validated and how network operators build trust chains. In practice, the entity is a boundary case: closely named Stellanor vehicles—Stellanor Datacenters Properties UK Limited (company number 16223822), Stellanor Datacenters UK Limited (16344352), Stellanor Datacenters Group Limited (16534947), and Stellanor Datacenters Properties UK II Limited (15921285)—are all publicly registered at Companies House, but none carry the “UK III” suffix. That means enterprise security teams and infrastructure analysts cannot yet exclude the possibility that a distinct legal and resource-holding vehicle lurks behind the member-list entry.

Public filings and corporate announcements fill in the wider picture. Companies House records show that Stellanor Datacenters UK Limited holds at least 75 percent control over Stellanor Datacenters Properties UK Limited, while Stellanor Datacenters Group Limited took over control of Stellanor Datacenters Properties UK II Limited (formerly Redcentric Data Centres Limited) on 30 April 2026. In parallel, company announcements confirm that the Stellanor platform completed the acquisition of eight Redcentric data centers in May 2026—serving around 450 enterprise customers—and two Colt Technology Services data centers in September 2025. Redcentric’s regulatory disclosure valued the deal at an estimated £122.85 million, with an initial payment of £115.4 million received.

The operating surface that these related entities present to the market is now substantial. Stellanor’s public materials describe an eleven-site UK data-center footprint with 39 MVA of secured grid capacity, offering colocation, migration services, and a carrier-neutral connectivity model that includes internet exchange access, ISP hosting, IP transit, and a choice of dark or lit fibre carriers. Customers—enterprises, IT providers, and public-sector organisations—are buying secure rack space, power, cooling, and physical access, meaning service continuity, power availability, and interconnection resilience sit at the heart of the dependency chain. While no reviewed evidence assigns any specific facility to the UK III identity, the commercial platform’s rapid growth means the legal vehicles that own and operate those assets—and any registry names attached to them—are increasingly material.

Several watchpoints will determine whether the UK III identity remains a passive registry entry or becomes an active operational concern. First, the appearance of a Companies House record, name‑change filing, or ownership statement that formally links the UK III wording to one of the verified Stellanor vehicles. Second, the emergence of RIPE database objects—organisation, maintainer, abuse‑contact, route, or RPKI entries—that explicitly name this entity. Third, the ongoing integration of the Colt and Redcentric data‑center estates, where post‑completion adjustments are still pending and the remaining Redcentric consideration was due by 31 July 2026. Fourth, Stellanor’s stated appetite for further acquisitions and greenfield projects, which could produce additional legal vehicles and new registry aliases.

The key uncertainty is straightforward: without a company number, the UK III entry could be a distinct vehicle prepared for a future asset transfer, a legacy directory label, or a duplicate of an already‑registered company. Until an official source—Companies House, a RIPE database object, or a Stellanor legal filing—connects the name to a known operating entity, the only defensible conclusion is that it remains an administrative registry signal with no verified resource holdings, facilities, or personnel. Readers should treat the broader Stellanor platform’s colocation and connectivity capabilities as a separate, observable risk surface and watch the registry entry for the moment it moves from passive list item to active infrastructure identity.

Operating Surface

The subject’s verified public role is as a member-list identity at the RIPE NCC, a regional internet registry. The broader operating context—though not directly attributable to this exact legal name—includes Stellanor’s UK data center services spanning colocation, migration, carrier-neutral connectivity, internet exchange access, IP transit, and fiber-carrier choice across eleven recently consolidated sites.

Because the name appears on a critical internet-number registry, any future resource allocation, maintainer object, or routing record tied to it could affect internet routing security and enterprise dependence on Stellanor-branded facilities. The entity is a legal boundary case: while closely related Stellanor companies are registered at Companies House, the exact UK III wording lacks a verified company number, making it a live data-gap that could mask or reveal control of IP resources and data-center assets.

Watchpoints

The UK III identity sits at the intersection of internet number resource governance and physical data-center consolidation. Its uncertain legal status could mask a future controlling entity for IP assets, while the observable platform demonstrates aggressive market consolidation. Strategically, this is a dual watchpoint: one on the registry for routing-authority signals, another on the colocation estate for service-continuity risk as integration proceeds.

1. Companies House record linking UK III to a known Stellanor vehicle. 2) Emergence of RIPE database objects under this name. 3) Settlement of Redcentric deferred consideration and post-completion adjustments by July 2026. 4) Any new acquisition or restructuring announcement that references the UK III name.

No company number, no RIPE database objects, no facility or customer contract assignment, no named technical contact for the exact UK III wording. The DWS backing is not evidenced at the UK III entity level. An official filing or Stellanor legal disclosure is needed to confirm the relationship.

Sources

• Internet registry record - public-source identity and registry context for STELLANOR DATACENTERS PROPERTIES UK III LIMITED.
• find-and-update.company-information.service.gov.uk - Companies House lists Stellanor Datacenters Properties UK Limited, company number 16223822, as active, incorporated on 3 February 2025, registered at 260-266 Goswell Road, and classified under SIC 63110 for data processing, hosting and related activities; this supports a closely named Stellanor legal vehicle but not the exact UK III wording.
• find-and-update.company-information.service.gov.uk - Companies House records Stellanor Datacenters UK Limited as the active person with significant control over Stellanor Datacenters Properties UK Limited from 20 November 2025, with 75% or more ownership and voting rights and appointment rights.
• stellanordatacenters.com - Stellanor's legal page names Stellanor Datacenters Properties UK Limited, company number 16223822, with head office at 260-266 Goswell Road, London EC1V 7EB; the page does not use the UK III wording.
• stellanordatacenters.com - Stellanor's homepage describes sustainable regional data-center services, including colocation, connectivity and migration, for enterprises, IT and managed cloud providers, public institutions and government organisations, and lists 11 UK data-center locations.
• stellanordatacenters.com - Stellanor's connectivity page describes cloud and carrier-neutral data centers, connectivity partners, internet-exchange access, ISP hosting, IP transit and fibre-carrier options.
• stellanordatacenters.com - Stellanor announced on 5 May 2026 that it completed the acquisition of eight Redcentric data centers serving approximately 450 enterprise customers and now operates eleven UK data centers with 39MVA of secured grid capacity.
• investegate.co.uk - Redcentric announced completion of the sale of Redcentric Data Centres Limited to Stellanor Datacenters Group Limited for an estimated 122.85 million pounds, with an initial payment of 115.4 million pounds received on 30 April 2026.
• stellanordatacenters.com - Stellanor's about page describes UK data-center and connectivity solutions, managed colocation and connectivity services, power, space, cooling and security, and lists named management and board roles including DWS-linked non-executive directors.
• stellanordatacenters.com - Stellanor announced that on 1 September 2025 it completed the acquisition of two data centers from Colt Technology Services, serving more than 100 clients, and planned growth through further acquisitions and greenfield projects.
• find-and-update.company-information.service.gov.uk - Companies House lists Stellanor Datacenters Properties UK II Limited, company number 15921285, as active at 260 Goswell Road, with previous name Redcentric Data Centres Limited from 28 August 2024 to 13 May 2026 and SIC 63110.
• find-and-update.company-information.service.gov.uk - Companies House records Stellanor Datacenters Group Limited, company number 16534947, as the active person with significant control over Stellanor Datacenters Properties UK II Limited from 30 April 2026, after Redcentric plc ceased control on the same date.