United Internet: brands it owns and its ownership tree
United Internet (XETRA: UTDI) is a publicly listed company headquartered in Montabaur, Germany that owns 9 consumer brands through 1 subsidiary.[1]
United Internet AG describes itself in its 2025 annual report as one of Europe's leading internet specialists. It is domiciled at Elgendorfer Strasse 57 in Montabaur, Germany, is registered at the district court under HR B 5762, and its shares trade on Xetra under the symbol UTDI in the Prime Standard segment. The report lists IONOS Group SE, Montabaur, among its shareholdings at 63.84%, and IONOS Group SE's 2025 annual report calls United Internet AG its parent company.
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Company facts
- Legal name
- United Internet AG
- Type
- publicly listed company · see all publicly listed company owners
- Headquarters
- 🇩🇪 Montabaur, Germany
- Tickers
- XETRA: UTDI
- Website
- www.united-internet.de
- Last verified
- · 3 sources
United Internet in numbers
- United Internet owns 9 consumer brands tracked here across 1 top-level categories; the largest is internet & digital with 9 brands.[1]
- 4 of its brands originated outside Germany.
- Brands are held through 1 recorded subsidiaries.
Everything United Internet owns
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Full-screen interactive tree →
Brand portfolio by category
Subsidiaries and holding entities
| Entity | Stake | Jurisdiction | Since | Source |
|---|---|---|---|---|
| IONOS Group SE | 63.8% | Germany | — | [1][3] |
Recent changes to this record
Frequently asked questions
What brands does United Internet own?
United Internet owns 9 consumer brands tracked here, including IONOS, united-domains, Sedo, Arsys, STRATO and Fasthosts.
Is United Internet a German company?
Yes. United Internet is headquartered in Montabaur, Germany.
Who owns United Internet?
United Internet is a publicly listed company owned by its shareholders; it trades as UTDI on the XETRA.
Sources (3) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] United Internet AG Annual Report 2025 — United Internet AG, Annual report; retrieved 8 November 2026.
- [2] IONOS Group SE: House of Brands — IONOS Group SE, Official document; retrieved 4 October 2026.
- [3] IONOS Group SE Annual Report 2025 — IONOS Group SE, Annual report; retrieved 8 November 2026.
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