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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,378 companies indexed · Last updated: today
DirectoryTelecommunications

Telecommunications

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IndustryIT & CommunicationIndustryTelecommunications
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Matching companies

1'209 companies found

CSP Meier AG Logo

CSP Meier AG 

Bern · Since 1990

CSP Meier AG is an electrical engineering firm providing electrotechnical planning and consulting services for construction projects. Services include planning of communication and security systems, fire alarm and emergency power/UPS systems, photovoltaic and alternative-energy solutions, power and low-voltage installations, surveillance systems, lightning protection and client advisory services.

Telecommunications
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CSS - Project GmbH Logo

CSS - Project GmbH 

Gerzensee · Since 2011

The core activity of CSS-Project GmbH is specialization in the field of telecommunications for protection systems, particularly in the areas of planning, implementation and maintenance of protection systems, including the Swiss security radio network POLYCOM, as well as the development and provision of products such as ZS-NAG and telematics equipment.

Telecommunications
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CTEK AG Logo

CTEK AG 

Baden · Since 2006

The core activity of ctek AG is to provide services and solutions in the field of information and communication technology (ICT), particularly in the areas of: Internet services (web hosting, mail hosting, V-server, hosted exchange, net backup), internet access and connection, virtual workplaces and VoIP communication, IT consulting and support, development and implementation of internet projects, network setup and operation, telephony and TV services, and domain management. The company positions itself as a full-service provider for companies that want to efficiently and securely shape their digital presence and communication.

IT Consulting & ServicesIT Infrastructure & CloudTelecommunications
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DABcom SA Logo

DABcom SA 

Préverenges · Since 2021

The core activity of DABCOM SA is the operation of a DAB+ network in Switzerland, particularly in the French-speaking region, and the provision of radio services to radio stations. The company offers radio stations the opportunity to broadcast their programs over the DAB+ network, reaching one million people in a dynamic and prosperous region.

Telecommunications
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DAC System SA Logo

DAC System SA 

Manno · Since 2013

The core activity of DAC System is the development and manufacture of solutions for monitoring and controlling radio transmission systems, particularly in the field of broadcasting and critical communication. The company offers specialized products and services to improve the reliability and efficiency of radio transmission systems, including solutions for monitoring antennas, power measurement and predictive maintenance.

Research & DevelopmentManufacture of IT HardwareTelecommunications
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DANET Datennetzgesellschaft Oberwallis AG Logo

DANET Datennetzgesellschaft Oberwallis AG 

Brig · Since 2012

The core activity of DANET Oberwallis AG is the planning, construction and provision of a comprehensive fibre-optic network in the Upper Valais, enabling various providers to offer their services on it.

Telecommunications
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Datatrade Managed AG Logo

Datatrade Managed AG 

Freienbach · Since 2013

The core activity of Datatrade is the provision of software services for mobile messaging services, particularly in providing managed services for mobile messaging providers, including SMS transit and SMS filtering services.

Telecommunications
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DCT-Delta Swiss AG Logo

DCT-Delta Swiss AG 

Altdorf Ur · Since 2008

The core activity of DELTA SWISS is the development and manufacture of solutions for broadband transmission, particularly in the field of Hybrid Fibre Coax (HFC) products for cable TV, monitoring and other applications, as well as the production of components for cable, satellite and fibre optic infrastructures.

Telecommunications
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DFZ Datenfunk-Zentrale AG Logo

DFZ Datenfunk-Zentrale AG 

Basel · Since 2007

The company's core activity is order and telephone brokerage, in particular the dispatch and brokerage of transportation orders, originally with a focus on taxi services, but now as a modern service center for various industries.

Telecommunications
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Diatel SA Logo

Diatel SA 

St-Imier · Since 1970

The core activity of Diatel SA is the provision of telecommunications services, particularly in the areas of cable television, radio, internet and telephony. The company operates a high-performance telecommunications network, mainly consisting of fiber optic cables, and offers combined services in cooperation with its partner Sunrise.

Telecommunications
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Digital Cable Group AG Logo

Digital Cable Group AG 

Zug · Since 2008

The core activity of Digital Cable Group is the provision of digital television services (digitalTV).

Telecommunications
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Digital Republic AG Logo

Digital Republic AG 

Rotkreuz · Since 2016

The core activity of Digital Republic is providing mobile internet services and products, including smart devices, eSIMs and IoT solutions, to both private and business customers. The company offers flexible and scalable solutions for mobile internet and connectivity, with a focus on transparency, simplicity and customer satisfaction.

Telecommunications
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Dominique Vadi Logo

Dominique Vadi 

Plan-Les-Ouates · Since 1989

Dominique Vadi provides telecommunications, data network and IT services, including Internet, TV and VoIP connections, IPBX systems, professional Wi‑Fi networks, VPNs and security/firewall solutions. The offering also includes cloud hosting and secure backups via Swisscom DCS, access control and video surveillance systems, and LAN cabling and electrical installation services.

Telecommunications
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DS Infra AG Logo

DS Infra AG 

Dietikon · Since 2023

DS Infra AG provides planning, construction and maintenance services for energy, telecommunications and traffic infrastructure, including operational safety equipment (BSA). Its offerings include network construction, energy storage and e‑mobility solutions, network security and consultancy.

Specialized Construction ActivitiesElectrical Planning & InstallationTelecommunications
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DWtel AG Logo

DWtel AG 

Recherswil · Since 2001

The core activity of DWtel is to provide communication solutions that encompass the convergence of telephony and IT. This includes connecting and integrating telephony and IT, servers, PCs, routers and the Internet, as well as communication in local and wide area networks (LAN, WAN) up to the Internet.

Telecommunications
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ECONICS MANAGEMENT AG Logo

ECONICS MANAGEMENT AG 

Sarnen · Since 2011

The core activity of ECONICS Management AG is to provide highly available communication connections and solutions, particularly in the area of Voice over IP (VoIP), CloudPBX, SIP-Trunking and other telecommunications services. The company also offers consulting, research and development, encryption, operation and monitoring as well as billing services to support customers in optimizing their communication infrastructure.

Telecommunications
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ECS Technologie AG Logo

ECS Technologie AG 

Zurich · Since 2023

ECS Technologie AG provides satellite communication solutions, including Ground Station as a Service (GSaaS) and Satellite IoT coverage solutions for IoT and service providers. Its services deliver on‑demand access to a global ground‑station network with a pay‑as‑you‑go model, multi‑orbit support, scalability and 24/7 monitoring and support.

Telecommunications
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EGEL SA Logo

EGEL SA 

Lausanne · Since 2005

EGEL SA is an electrical contracting company that designs, installs and maintains electrotechnical systems for new buildings and for office, industrial and commercial properties.

Telecommunications
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Electrocity Rrahmani Logo

Electrocity Rrahmani 

Le Grand-Saconnex · Since 2008

Electrocity Rrahmani provides electrical, telecommunications, security, lighting and IT/domotics services, including planning, installation and maintenance of building systems. The company also carries out troubleshooting and repair interventions.

Telecommunications
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ELECTRO VALAIS SA Logo

ELECTRO VALAIS SA 

Sion · Since 2018

The core activity of Electro Valais SA is the provision of services in the field of electrical installations. The company offers high-quality solutions to meet the needs of its customers, including the planning, installation and maintenance of electrical systems.

Electrical Planning & InstallationTelecommunications
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.
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