United Internet
United Internet AG is a German internet services company that provides web hosting, cloud applications, and telecommunications services. It operates through various subsidiaries and brands, including 1&1, GMX, and IONOS, primarily serving the European market.
Brand Identity Data
HQ Country
Germany
HQ City
Montabaur
Founded
2000
EU Headquartered
Yes
EU Manufactured
Yes
Ownership Type
public
Stock Exchange
Frankfurt Stock Exchange
Tax Domicile
DE
Ultimate Parent
United Internet AG
Data Hosting
DE
CLOUD Act Exposure
No ✓
GDPR Status
Fined €10M
DSA Designation
Very Large Online Platform (VLOP) not applicable, but subject to DSA transparency obligations
Carbon Neutral
true
B Corp Certified
No
Supply Chain
Reports based on German Supply Chain Due Diligence Act (LkSG)
Repair / Recycling
No
Ethical Certifications
ISO 27001, ISO 50001, ISO 14001
Verified on October 15, 2026
Corporate Lineage
1988
Company founding
Ralph Dommermuth founded 1&1 EDV-Marketing GmbH, the predecessor to United Internet.
1998
IPO
The company went public on the Frankfurt Stock Exchange.
2017
Drillisch acquisition
United Internet acquired Drillisch AG to expand its mobile telecommunications capabilities.