Insights

Strategic Partnership Congstar is a subsidiary of Deutsche Telekom and collaborates on high-profile sponsorships such as FC St. Pauli, indicating openness to co-branding, CSR alignment, and joint marketing opportunities that could be extended to bundled telecom and digital solutions.

Tech Stack Utilizes a modern mix of tools including Microsoft Advertising, Power BI, Azure, and AI chat capabilities (ChatGPT), suggesting opportunities to upsell data analytics, advertising solutions, and AI-driven customer experience enhancements.

Brand Credibility Award history highlighting honesty and reliability plus ongoing expansion in eSIM capabilities point to a customer-first positioning. This provides a foothold for enterprise-grade security, compliance services, and trusted digital transformation offerings.

Flexible Workforce Hybrid and remote-friendly culture within a large corporate framework offers a balance of agility and stability, signaling readiness for managed cloud, collaboration, and IT optimization services that support distributed teams.

Growth Potential Revenue range and similar market peers indicate room for scalable solutions in digital advertising, customer analytics, and connectivity enhancements. This aligns with expanding their tech stack and exploring value-added services beyond core mobile offerings.

Similar companies to congstar

congstar Tech Stack

congstar uses 8 technology products and services including Microsoft Advertising, Crazy Egg, Canva, and more. Explore congstar's tech stack below.

Media & News

congstar's Email Address Formats

congstar uses at least 3 email formats:
congstar Email FormatsExamplePercentage
Last@congstar.netDoe@congstar.net
73%
First.Last@congstar.netJohn.Doe@congstar.net
27%
First.Last@congstar.deJohn.Doe@congstar.de
100%

Frequently Asked Questions

What is congstar's phone number?

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You can contact congstar's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is congstar's official website and social media links?

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congstar's official website is congstar.de and has social profiles on LinkedIn.

How much revenue does congstar generate?

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As of August 2026, congstar's annual revenue is estimated to be $25M - $50M.

What is congstar's SIC code and NAICS code?

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congstar's SIC code is 4812 - Radiotelephone Communications and NAICS code is 517 - Telecommunications.

How many employees does congstar have currently?

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As of August 2026, congstar has approximately 367 employees across 1 continents, including Europe. Key team members include Head Of Customer Experience: P. E., Head Of Commercial Management Mobile: T. D. and Head Of Digital Sales: K. M. Explore congstar's employee directory with LeadIQ.

What industry does congstar belong to?

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congstar operates in the Telecommunications industry.

What technology does congstar use?

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congstar's tech stack includes Microsoft Advertising, Crazy Egg, Canva, Power BI, Usercentrics, ChatGPT, Microsoft Active Directory and Microsoft Azure.

What is congstar's email format?

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congstar's email format typically follows the pattern of Last@congstar.net. Find more congstar email formats with LeadIQ.

When was congstar founded?

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congstar was founded in 2007.
congstar logo

congstar

TelecommunicationsNorth Rhine-Westphalia, Germany201-500 Employees

Congstar is a German telecommunications provider headquartered in Cologne, North Rhine-Westphalia. It operates as a discount brand within Deutsche Telekom, combining the flexibility of a smaller organization with the backing of a large corporate structure. The company emphasizes a diverse and inclusive culture, encouraging employees to question ideas and collaborate creatively, with options to work both on-site in Cologne and remotely. This positioning places Congstar within Germany's telecommunications sector, leveraging the scale of the Deutsche Telekom group while pursuing its own market niche.

In 2024, Congstar renewed its long-running main sponsorship with FC St. Pauli, highlighting its engagement in social responsibility initiatives. The firm has earned industry recognition in the past, including awards for honesty and for being Mobile Provider of the Year in 2022. Operating from Cologne and serving the German market, the company maintains a mid-sized workforce and integrates flexibility into its working arrangements.

Section iconCompany Overview

Phone number
SIC Code
4812 - Radiotelephone Communications
NAICS Code
517 - Telecommunications
Founded
2007
Employees
201-500

Section iconFunding & Financials

  • $25M - $50M

    congstar's revenue is estimated to be in the range of $25M - $50M

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