1&1 AG
1&1 AG is a Join Stock Company registered in Germany under HRB 28530 Montabaur, and its current status with Handelsregister (Commercial Register) is active. The company was incorporated on 29 December 1997 and lists its registered address as Montabaur, Germany. 10 shareholders are on record for 1&1 AG, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Handelsregister (Commercial Register) and was last updated on 25 September 2026.
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Shareholders
10
Shareholders of 1&1 AG
10 shareholders are currently on record for 1&1 AG, based on voting-rights notifications filed under the WpHG (Wertpapierhandelsgesetz). The largest of these is DFA International Small Cap Value Portfolio, holding 21.4% — the largest recorded stake — followed by Vanguard International Stock Index-Total Intl Stock Indx at 20.2%; the remaining 8 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| DFA International Small Cap Value Portfolio | 21.4% | Handelsregister (Commercial Register) | |
| Vanguard International Stock Index-Total Intl Stock Indx | 20.2% | Handelsregister (Commercial Register) | |
| Vanguard Tax Managed Fund-Vanguard Developed Markets Index Fund | 13.2% | Handelsregister (Commercial Register) | |
| DFA Continental Small Company Series | 8.8% | Handelsregister (Commercial Register) | |
| iShares Core MSCI EAFE ETF | 8.6% | Handelsregister (Commercial Register) | |
| DFA International Core Equity Portfolio | 6.8% | Handelsregister (Commercial Register) | |
| Vanguard Intl Equity Index Fds-FTSE All World ex U.S.Small Cap Index | 6.2% | Handelsregister (Commercial Register) | |
| Russell Inv Co-Tax-Managed International Equity Fund | 5.3% | Handelsregister (Commercial Register) | |
| iShares MSCI EAFE Small Cap ETF | 5.1% | Handelsregister (Commercial Register) | |
| Schwab Strategic Tr-Schwab Fundamental Intl Small Company Idx ETF | 4.5% | Handelsregister (Commercial Register) |
Officers
17
Directors and officers of 1&1 AG
Two of the 17 officer records shown for 1&1 AG are current appointments, filed with Handelsregister (Commercial Register). Sascha D'Avis and Alessandro Nava both serve as Aufsichtsratsmitglied (board member). The remaining 15 records shown (Ralph Dommermuth, Marc Anton Brucherseifer and 11 others) are former appointments that have since been resigned. Management authority at 1&1 AG sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control. The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Data availability
The register reports 19 officers in total, including past appointments, though only the 17 most relevant records are shown here.
Group Structure
Group structure of 1&1 AG
1&1 AG sits 1 level below its ultimate parent, United Internet AG, registered in Germany. 8 subsidiaries are recorded beneath it, across 2 jurisdictions. The full chain up to United Internet AG is derived by walking shareholder filings across jurisdictions; no link in it is independently corroborated by 1&1 AG's own shareholder record. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
- IQ-optimize Software GmbH (Germany)
- Drillisch Logistik GmbH (Germany)
- CA BG AlphaPi AG in Liqu. (Austria)
- Blitz 17-665 SE (Germany)
- 1&1 Telecommunication SE (Germany)
- A 1 Marketing, Kommunikation und neue Medien GmbH (Germany)
- Blitz 17-666 SE (Germany)
- Drillisch Online GmbH (Germany)
Data availability
Those 8 subsidiaries span Germany, Austria jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. Two of the 8 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
United Internet AG
Germany
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Frequently Asked Questions
Who owns 1&1 AG?
10 shareholders are currently on record for 1&1 AG, based on voting-rights notifications filed under the WpHG (Wertpapierhandelsgesetz). The largest of these is DFA International Small Cap Value Portfolio, holding 21.4% — the largest recorded stake — followed by Vanguard International Stock Index-Total Intl Stock Indx at 20.2%; the remaining 8 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is 1&1 AG's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for 1&1 AG is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does 1&1 AG have on record?
10 shareholders are shown on record for 1&1 AG.
What is 1&1 AG's company registration number?
1&1 AG's registration number is HRB 28530 Montabaur, filed with Handelsregister (Commercial Register) in Germany. Its current status on the register is active.
Is 1&1 AG still an active company?
1&1 AG's status on Handelsregister (Commercial Register) is listed as active.
When was 1&1 AG incorporated?
1&1 AG was incorporated on 29 December 1997, according to Handelsregister (Commercial Register).
What is 1&1 AG's registered address?
The registered address on file for 1&1 AG is Montabaur, Germany.
What legal structure is 1&1 AG registered as?
1&1 AG is registered as a Join Stock Company in Germany.
Who are the officers/directors of 1&1 AG?
Two of the 17 officer records shown for 1&1 AG are current appointments, filed with Handelsregister (Commercial Register). Sascha D'Avis and Alessandro Nava both serve as Aufsichtsratsmitglied (board member). The remaining 15 records shown (Ralph Dommermuth, Marc Anton Brucherseifer and 11 others) are former appointments that have since been resigned. Management authority at 1&1 AG sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does 1&1 AG have a parent company or subsidiaries?
1&1 AG sits 1 level below its ultimate parent, United Internet AG, registered in Germany. 8 subsidiaries are recorded beneath it, across 2 jurisdictions. Those 8 subsidiaries span Germany, Austria jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. Two of the 8 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to 1&1 AG's ownership over time?
This profile reflects a point-in-time snapshot from Handelsregister (Commercial Register). Zavia's monitoring API can track changes to 1&1 AG's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access 1&1 AG's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Germany, so records like 1&1 AG's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Handelsregister (Commercial Register) and was last synced on 25 September 2026.