Insights

Strategic Sponsorship Congstar maintains high-visibility sponsorships (e.g., FC St. Pauli) that align with social responsibility messaging, presenting opportunities to package joint CSR marketing, digital engagement, and co-branded campaigns with a focus on brand trust and community impact.

Brand Trust & Awards Historical recognition as Most Honest Mobile Operator and Mobile Provider of the Year signals a reputational asset. This can be leveraged to upsell premium connectivity services, loyalty programs, or enterprise-level solutions to businesses seeking reliability and ethics-driven partnerships.

DT synergies As part of Deutsche Telekom, Congstar offers a bridge between startup agility and corporate security. This dual positioning creates cross-sell potential for enterprise-grade network solutions, security services, and scalable cloud-based offerings to mid-market customers currently served by DT.

Tech & Digital Tech stack familiarity with modern tools and eSIM capability indicates a receptiveness to digital propositions, API integrations, and scalable mobile-first solutions. Opportunity to pitch API-driven billing, device management, or IoT connectivity packages to tech-forward SMEs.

Growth & Market Fit Revenue in the mid-market range with a toes-in-the-water presence beyond traditional consumer segments suggests potential for bundled business plans, SME-focused data packages, and managed connectivity services to expand Congstar’s footprint in Germany’s competitive telecom landscape.

Similar companies to congstar

congstar Tech Stack

congstar uses 8 technology products and services including Facebook Pixel, Decibel, Cloudflare CDN, and more. Explore congstar's tech stack below.

  • Facebook Pixel
    Analytics
  • Decibel
    Analytics
  • Cloudflare CDN
    Content Delivery Network
  • Figma
    Design
  • Deutsche Telekom Global Carrier's Managed DNS
    Domain Name Services
  • styled-components
    Javascript Frameworks
  • Trusted Shops
    Online Review Management
  • Node.js
    Programming Languages

Media & News

congstar's Email Address Formats

congstar uses at least 2 format(s):
congstar Email FormatsExamplePercentage
Last@congstar.netDoe@congstar.net
77%
First.Last@congstar.netJohn.Doe@congstar.net
23%
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.

What is congstar's SIC code NAICS code?

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

How many employees does congstar have currently?

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As of July 2026, congstar has approximately 359 employees across 2 continents, including EuropeSouth America. Key team members include Head Of Customer Experience: P. E.Head Of Commercial Management Mobile: T. D.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 Facebook PixelDecibelCloudflare CDNFigmaDeutsche Telekom Global Carrier's Managed DNSstyled-componentsTrusted ShopsNode.js.

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

Section iconFunding & Financials

  • $25M$50M

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

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