About us

1&1 AG, headquartered in Montabaur, is a publicly listed telecommunications provider
and part of the United Internet Group.
With a strong focus on the German market, 1&1 actively drives the country's digital sovereignty.

Better and better every day

With over 30 years of experience, 1&1 stands for powerful mobile plans, award-winning customer service, and continuous product innovation – from all-net-flat rates and unlimited data plans to exclusive benefits through the 1&1 Vorteilswelt. The 1&1 Service Card offers premium services such as 24-hour device replacement and a dedicated priority hotline. 1&1 promotes digital inclusion through reliable, competitively priced products – consistently awarded top marks by independent trade publications. In addition, the discount brands of Drillisch Online GmbH serve price-sensitive customers with a strong focus on affordability.

The 1&1 O-RAN

1&1 operates the first fully virtualized 5G mobile network in Europe based on innovative Open RAN technology – independent, open by design, and built for the real-time applications of tomorrow. As Germany's fourth mobile network, the 1&1 O-RAN stands for greater competition and innovation in the national telecommunications landscape.

Nationwide Broadband Coverage

As one of Germany's leading providers of VDSL, vectoring, and next-generation fiber internet, 1&1 is driving Germany's gigabit transformation. The company leverages the nationwide fiber-optic transport network of 1&1 Versatel and, through partnerships with Deutsche Telekom and leading city carriers, is able to supply millions of households with future-proof fiber connections.

Pdf [2021]: Dnvglstn001

In 2021, DNV GL rebranded back to . As a result, many standards were reissued with new identifiers.

, which allows users to generate a project-specific abstract rather than sifting through a massive 500-page document Key Features of DNV-ST-N001 Harmonized Legacy Standards dnvglstn001 pdf

DNV-ST-N001 (formerly DNVGL-ST-N001) is the primary global standard for Marine Warranty Survey (MWS) approval of temporary offshore operations, covering load-out, transport, and installation. Updated in December 2023, this comprehensive, 500-page standard provides technical requirements for offshore wind, subsea cables, and oil and gas assets to ensure safety and risk control. The official document is available through the DNV website, which also provides a standards wizard on the Veracity platform and related training courses. Access the standard and related services at DNV . DNV-ST-N001 Marine operations and marine warranty In 2021, DNV GL rebranded back to

, we need a higher safety margin for the sea-state on Tuesday. The wave period is hitting a resonance frequency mentioned in the Annex." DNV-ST-N001 Marine operations and marine warranty , we

for subsea cable installation or how the standard applies to offshore wind

In 2021, DNV GL rebranded back to . As a result, many standards were reissued with new identifiers.

, which allows users to generate a project-specific abstract rather than sifting through a massive 500-page document Key Features of DNV-ST-N001 Harmonized Legacy Standards

, we need a higher safety margin for the sea-state on Tuesday. The wave period is hitting a resonance frequency mentioned in the Annex."

for subsea cable installation or how the standard applies to offshore wind

Social Commitment

As a successful telecommunications company, 1&1 sees itself as part of society and takes the responsibility that goes with this. Our corporate social responsibility activities revolve around our United Internet for UNICEF foundation.

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Sustainability

Doing business sustainably is a part of what 1&1 does every day. Our goal is to be a pioneer in this area as well.

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Non-financial Group report 2025

PDF 1,75 MB

ESG-Report 2024/2025

PDF Download (15,7 MB)