highperformr logo

1&1 Telecommunication SE's Overview

Total employees1388
HeadquartersMontabaur
Founded

1&1 is a major telecommunications and internet service provider in Germany, offering a wide range of products including mobile tariffs, DSL connections, fiber optic internet, and hosting services. As part of the United Internet group, 1&1 is known for its competitive pricing and is currently focused on building out its own advanced 5G mobile network, aiming to become Germany's fourth mobile network operator. They cater to both private and business customers, emphasizing value and comprehensive service packages.

Where is 1&1 Telecommunication SE's Headquarters?

HQ Function

The Montabaur campus serves as the central hub for strategic management, product development, network operations, marketing, and administration for 1&1's telecommunications services.

Notable Features:

The campus, often referred to as 'New Work City' or '1&1 Campus Montabaur', is a modern office complex designed with a focus on fostering collaboration, innovation, and employee well-being. It features contemporary architecture and extensive green spaces.

Work Culture:

The work culture at 1&1's headquarters emphasizes technological innovation, customer-centricity, and a dynamic, fast-paced environment. The modern campus facilities are designed to support agile working methods and employee engagement.

HQ Significance:

The Montabaur headquarters is significant as the nerve center for 1&1's ambitious project to build Germany's fourth mobile network. It symbolizes the company's growth and its commitment to becoming a key player in the German telecommunications landscape.

Values Reflected in HQ: The headquarters reflects values such as innovation, technological leadership, transparency (through open office designs), and a commitment to providing a high-quality work environment for employees.

Location:

1&1's primary market focus is Germany, where it offers its comprehensive suite of telecommunications services and is building its own mobile network. While its direct branded operations are concentrated in Germany, its mobile services support customers internationally through roaming agreements. The parent company, United Internet AG, has a broader international footprint, particularly through its web hosting and cloud services arm, IONOS, which operates in multiple European countries and North America. 1&1 also collaborates with global technology partners for its network infrastructure and service components.

Street Address:

Elgendorfer Straße 57

City:

Montabaur

State/Province:

Rhineland-Palatinate

Country:

Germany

1&1 Telecommunication SE's Global Presence

Karlsruhe, Baden-Württemberg/Germany

Address: Brauerstraße 48, 76135 Karlsruhe, Germany

Leverages the strong tech talent pool and research institutions in the Karlsruhe technology region. Plays a crucial role in developing and maintaining the technical infrastructure and services.

Munich, Bavaria/Germany

Address: Sapporobogen 6-8, 80637 München, Germany

Serves as a strategic point for engaging with customers and partners in Southern Germany, a significant economic region.

Berlin, Berlin/Germany

Address: Ernst-Reuter-Platz 2, 10587 Berlin, Germany

Strategic presence in the capital city, facilitating networking, business development, and access to a diverse talent pool.

Buying Intent Signals for 1&1 Telecommunication SE

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Executive Team of 1&1 Telecommunication SE

As of April 2025, 1&1 Telecommunication SE' leadership includes:

Ralph Dommermuth - CEO, 1&1 AG & CEO, United Internet AG (Founder of 1&1)
Markus Huhn - CFO, 1&1 AG
Alessandro Nava - CDO (Chief Development Officer), 1&1 AG
Michael Martin - CSO (Chief Sales Officer), 1&1 AG

Investors of 1&1 Telecommunication SE

1&1 Telecommunication SE has been backed by several prominent investors over the years, including:

United Internet AG (Parent Company)
Ralph Dommermuth (via Ralph Dommermuth Invest GmbH - Majority Shareholder of United Internet AG)
Various institutional and private shareholders (as United Internet AG is publicly traded)

Executive New Hires/Exits in the Last 12 Months

Hire0
Exits0

In the last 12 months, there have been no major, widely publicized changes to the top Management Board (Vorstand) of 1&1 AG. The current executive team has been focused on strategic initiatives, primarily the rollout of 1&1's 5G mobile network. Stability at the leadership level has characterized this period.

Technology (Tech Stack) used by 1&1 Telecommunication SE

Discover the tools 1&1 Telecommunication SE uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

1&1 Telecommunication SE Email Formats and Examples

1&1, like many German corporations, tends to use common email patterns. The most prevalent formats usually involve combinations of an employee's first name and last name.

Common formats include: [firstname].[lastname]@1und1.de (e.g., max.mustermann@1und1.de) or [f].[lastname]@1und1.de (e.g., m.mustermann@1und1.de). Variations might exist for different departments or legacy systems.

Format

anna.beispiel@1und1.de

Example

75%

Success rate

News and media

ReutersDecember 8, 2023

1&1 news title: Germany's 1&1 launches mobile network, challenging big three

1&1 officially launched its mobile network, becoming Germany's fourth network operator. The company aims to offer innovative services and compete with established players like Deutsche Telekom, Vodafone, and O2 Telefonica....more

TeleGeographyAugust 2, 2023

1&1 news title: 1&1 signs national roaming agreement with Vodafone

1&1 entered into a long-term national roaming partnership with Vodafone Germany. This agreement ensures 1&1 customers have nationwide mobile coverage while 1&1 continues to build out its own 5G network infrastructure....more

United Internet AG Press Release (via dgap.de or similar)May 15, 2024

1&1 news title: United Internet reports Q1 2024 results, 1&1 continues 5G network expansion

United Internet, parent company of 1&1, released its Q1 2024 financial results, highlighting continued investments in 1&1's 5G network build-out and growth in customer numbers for its mobile and DSL segments....more

Highperformr’s free tools for company research

Explore Employees by Region or Country

See where a company’s workforce is located, by country or region.

View Funding Details

View past and recent funding rounds with amounts and investors.

Understand Revenue Insights

Understand company revenue estimates and financial scale.

Track Active Job Openings

Track active roles and hiring trends to spot growth signals.

Review Product and Offerings

Discover what a company offers—products, platforms, and solutions.

Get SIC or NAICS Codes

Get the company’s official SIC and NAICS classifications.

Analyze Website Traffic Trends

Analyze visitor volume, engagement, and top traffic sources.

Discover Social Profiles and Engagement

Explore LinkedIn, Twitter, and other active social profiles.

Identify Top Competitors

Identify top competitors based on similar business traits.

Research and Discover Companies with Highperformr — Smarter, Faster

Explore companies in depth — from the tech they use to recent funding, hiring trends, and buyer signals — all in one powerful view.

Highperformr AI helps you surface the right accounts and enrich your CRM with verified company and contact insights, so your teams can prioritize and engage faster.

  • Track intent signals to find buyers who are actively in-market
  • Enrich contacts and companies instantly, no need to switch tools
  • Automate workflows to stay ahead of every change
  • Connect your CRM & tools for seamless data sync and activation

Thousands of companies, including 1&1 Telecommunication SE, are just a search away.