# 30 leading Telecommunications companies in the Hauts-de-Seine department
Tamtam tracks 61 Telecommunications companies headquartered in the Hauts-de-Seine department. This list ranks the 30 largest by number of employees on LinkedIn, led by Orange, SAGEMCOM and Alcatel-Lucent Enterprise. Their median headcount is 322. Half of them were founded in 2008 or later. The most common headquarters are Boulogne-Billancourt (5), Courbevoie (5) and Issy-les-Moulineaux (4).
These telecommunications companies in Hauts-de-Seine largely represent established firms and mid-sized enterprises. Orange is a global operator offering services across 26 countries, while SAGEMCOM provides innovative broadband internet and entertainment solutions. Alcatel-Lucent Enterprise focuses on secure networking and communication solutions, and La Poste Mobile offers affordable mobile telecom services.
The data shows a concentration of companies in specific towns within Hauts-de-Seine. Issy-les-Moulineaux hosts Orange, Sogetrel, and Eutelsat. Bois-Colombes is home to SAGEMCOM and Paritel, while Courbevoie includes SFR DISTRIBUTION and TRANSATEL. This suggests a clustering of telecommunications activity in these areas.
π«π· Hauts-de-Seine Β· 30 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Orange](https://www.tamtam.ai/c/orange-issy-les-moulineaux) (orange.com)
A leading global telecommunications operator offering services to millions of customers and multinational companies across 26 countries | Telecommunications | π«π· Issy-les-Moulineaux | 146,935 | |
| 2 | [SAGEMCOM](https://www.tamtam.ai/c/sagemcom) (sagemcom.com)
Provides innovative broadband internet, entertainment, and managed energy solutions. Designs sustainable technology, leader in its markets, with employee ownership. | Telecommunications | π«π· Bois-Colombes | 5,279 | 2008 |
| 3 | [Alcatel-Lucent Enterprise](https://www.tamtam.ai/c/alcatel-lucent-enterprise) (al-enterprise.com)
Provides secure networking and communication solutions with built-in security, environmental focus, and compliance for organizations worldwide. | Telecommunications | π«π· Colombes | 4,055 | 2014 |
| 4 | [La Poste Mobile](https://www.tamtam.ai/c/la-poste-mobile) (lapostemobile.fr)
Provides affordable mobile telecom services with low-cost plans, accessible devices, extensive customer support, and promotes responsible digital usage for all ages. | Telecommunications | π«π· Chaville | 3,619 | 2011 |
| 5 | [Sogetrel](https://www.tamtam.ai/c/sogetrel) (sogetrel.fr)
A leader in digital transformation, specializing in digital infrastructure services and connected devices to enhance citizens' lives, business performance, and sustainable development | Telecommunications | π«π· Issy-les-Moulineaux | 2,581 | 1985 |
| 6 | [Axione](https://www.tamtam.ai/c/axione) (axione.com)
A leading player in public network initiatives, specializing in telecommunications infrastructure deployment, operation, financing, and asset management for rural and urban areas | Telecommunications | π«π· Malakoff | 2,488 | |
| 7 | [Eutelsat](https://www.tamtam.ai/c/eutelsat-group) (eutelsat.com)
Delivers connectivity and broadcast services worldwide. Operates a global fleet of 37 Geostationary satellites and over 600 Low Orbit earth satellites for diverse markets. | Telecommunications | π«π· Issy-les-Moulineaux | 1,755 | |
| 8 | [TDF](https://www.tamtam.ai/c/tdf) (tdf.fr)
In the heart of the digital revolution, this company develops innovative solutions for managing and distributing audio, video, and data content through various transmission methods | Telecommunications | π«π· Montrouge | 1,741 | 1975 |
| 9 | [SADE TΓ©lΓ©com](https://www.tamtam.ai/c/sade-telecom) (ensio.eu)
Specialized teams deploy digital and energy networks, offering turnkey solutions, services, and maintenance with sustainable and safe practices. | Telecommunications | π«π· Clamart | 1,063 | 2008 |
| 10 | [SFR DISTRIBUTION](https://www.tamtam.ai/c/sfr-distribution)
National retail subsidiary managing three hundred points of sale and two thousand employees providing telecommunication services, products, and customer support across France. | Telecommunications | π«π· Courbevoie | 574 | 2017 |
| 11 | [Paritel](https://www.tamtam.ai/c/paritel) (paritel.fr)
Paritel, a telecom operator for small businesses, prioritizes performance and individual talent while fostering teamwork and career development for its 700 employees | Telecommunications | π«π· Bois-Colombes | 501 | 1991 |
| 12 | [Linkt](https://www.tamtam.ai/c/linkt) (linkt.fr)
Provides managed services, telecom, and cybersecurity expertise for mid-sized and large companies, and local authorities, to optimize and secure their digital infrastructure. | Telecommunications | π«π· Puteaux | 463 | 2016 |
| 13 | [Itancia](https://www.tamtam.ai/c/itancia) (itancia.com)
Provides eco-responsible business communication, collaboration, network, and security solutions. Supports partners in adopting responsible practices, balancing technology, economy, and ecology through distribution, services, and product lifecycle management. | Telecommunications | π«π· Nanterre | 395 | 1991 |
| 14 | [Keyyo](https://www.tamtam.ai/c/keyyo) (keyyo.com)
Innovative communication solutions with VoIP for businesses, managed through the Cloud Trusted by over 10,000 clients in various industries | Telecommunications | π«π· Clichy | 337 | 1994 |
| 15 | [TRANSATEL (an NTT company)](https://www.tamtam.ai/c/transatel-an-ntt-company) (transatel.com)
Innovative cellular connectivity solutions provider enabling global IoT connectivity for industries and travelers, part of NTT group with 330,000 employees worldwide | Telecommunications | π«π· Courbevoie | 322 | 2000 |
| 16 | [TOTEM](https://www.tamtam.ai/c/totem-puteaux) (totemtowers.com)
TOTEM is a TowerCo company offering infrastructure and connectivity solutions in France and Spain, focusing on towers and Distributed Antenna Solutions | Telecommunications | π«π· Puteaux | 278 | 2021 |
| 17 | [XpFibre](https://www.tamtam.ai/c/xpfibre) (xpfibre.com)
Design, construction, and operation of optical fiber networks across France, maintaining over seven million connections for local communities through private and public partnerships. | Telecommunications | π«π· Courbevoie | 263 | |
| 18 | [TISSEO SERVICES](https://www.tamtam.ai/c/tisseo-services) (recrutement.tisseo-services.fr)
Specializes in FTTH fiber optic connection and repair services for Bouygues Telecom customers, emphasizing employee value and company growth. | Telecommunications | π«π· Gennevilliers | 246 | 2018 |
| 19 | [Thomson Telecom](https://www.tamtam.ai/c/thomson-telecom) (mythomson.com)
Development, design, and delivery of telecommunication products and services for residential and business markets worldwide, focusing on quality and innovation. | Telecommunications | π«π· Boulogne-Billancourt | 243 | |
| 20 | [Cellnex France](https://www.tamtam.ai/c/cellnex-france) (cellnex.com)
Operating and maintaining mobile towers, fiber optic networks, and data centers for telecommunications operators and organizations requiring large-scale digital connectivity and hosting services. | Telecommunications | π«π· Boulogne-Billancourt | 240 | 2016 |
| 21 | [Prosodie-Capgemini](https://www.tamtam.ai/c/prosodie-capgemini)
This company focuses on customer relations and offers a variety of content such as customer experience, articles, and job opportunities | Telecommunications | π«π· Boulogne-Billancourt | 233 | 1986 |
| 22 | [eServGlobal](https://www.tamtam.ai/c/eservglobal) (seamless.se)
SDS provides software platforms for digital sales and distribution to mobile users in over 50 markets, processing billions of transactions annually | Telecommunications | π«π· Malakoff | 230 | 1983 |
| 23 | [Viaccess-Orca](https://www.tamtam.ai/c/viaccess-orca) (viaccess-orca.com)
Provides premium TV platforms, OTT, and content protection globally, delivering, protecting, and monetizing advanced TV services for operators, broadcasters, and content providers. | Telecommunications | π«π· Courbevoie | 226 | 2012 |
| 24 | [Eurofiber France](https://www.tamtam.ai/c/eurofiber-france)
Provides extensive fiber optic network and innovative, secure cloud hosting solutions to support business digital transformation and connectivity needs. | Telecommunications | π«π· Issy-les-Moulineaux | 161 | |
| 25 | [Alleo de Bouygues Telecom](https://www.tamtam.ai/c/alleo-de-bouygues-telecom) (alleo.fr)
Provides IT and telecom solutions including cybersecurity, VoIP integration, managed services, and local customer support with certified professionals. | Telecommunications | π«π· Clichy | 144 | |
| 26 | [Vitrinemedia](https://www.tamtam.ai/c/vitrinemedia) (vitrinemedia.com)
Design and retail of innovative, ultra-thin LED display panels with various formats and colors for window merchandising worldwide. | Telecommunications | π«π· Boulogne-Billancourt | 140 | 2007 |
| 27 | [Dstny FR](https://www.tamtam.ai/c/dstny-fr) (dstny.fr)
Provides cloud-based unified communication tools integrating voice, video, chat, mobile, and cybersecurity for businesses across various sectors. | Telecommunications | π«π· Clichy | 136 | |
| 28 | [THOMSON BROADCAST](https://www.tamtam.ai/c/thomson-broadcast) (thomsonbroadcast.tv)
A trusted pioneer in broadcasting technology, specializing in transmission products for terrestrial TV and radio with world-class systems integration services and a global support presence | Telecommunications | π«π· Colombes | 100 | 1918 |
| 29 | [innov8 Group](https://www.tamtam.ai/c/innov8-group) (innov8.fr)
Organizes the adoption of disruptive technology by distributing consumer connected products, renewable energy solutions, and advanced robotics across Europe. | Telecommunications | π«π· Courbevoie | 93 | 2012 |
| 30 | [Bouygues Telecom Business β Distribution](https://www.tamtam.ai/c/bouygues-telecom-business-distribution) (btbd.fr)
Provides telecom services to over 2 million clients through various distribution channels, emphasizing human values and entrepreneurial spirit in a dynamic sector. | Telecommunications | π«π· Boulogne-Billancourt | 90 | |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
## More company lists in the Hauts-de-Seine department
- [The largest companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/largest-companies-hauts-de-seine) (5,160)
- [Multinational companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/multinational-companies-hauts-de-seine) (1,231)
- [IT services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-companies-hauts-de-seine) (737)
- [IT Services and IT Consulting companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-hauts-de-seine) (706)
- [Professional services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/professional-services-firms-hauts-de-seine) (629)
- [Consulting firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/consulting-firms-hauts-de-seine) (563)
- [Companies with in-house R&D in the Hauts-de-Seine department](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-seine) (510)
- [SaaS companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/saas-companies-hauts-de-seine) (389)
- [Business Consulting and Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/business-consulting-and-services-companies-hauts-de-seine) (304)
- [Software Development companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/software-development-companies-hauts-de-seine) (301)
- [Retail chains in the Hauts-de-Seine department](https://www.tamtam.ai/l/retail-chains-hauts-de-seine) (292)
- [Manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/manufacturers-hauts-de-seine) (285)
- [Advertising Services companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/advertising-services-companies-hauts-de-seine) (281)
- [Marketing and communications agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/marketing-agencies-hauts-de-seine) (235)
- [Subscription businesses in the Hauts-de-Seine department](https://www.tamtam.ai/l/subscription-businesses-hauts-de-seine) (228)
- [Hardware manufacturers in the Hauts-de-Seine department](https://www.tamtam.ai/l/hardware-companies-hauts-de-seine) (199)
- [Financial services firms in the Hauts-de-Seine department](https://www.tamtam.ai/l/financial-services-firms-hauts-de-seine) (198)
- [Companies with a mobile app in the Hauts-de-Seine department](https://www.tamtam.ai/l/companies-with-mobile-app-hauts-de-seine) (189)
- [Critical infrastructure operators in the Hauts-de-Seine department](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-seine) (169)
- [AI companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/ai-companies-hauts-de-seine) (159)
- [Education providers in the Hauts-de-Seine department](https://www.tamtam.ai/l/education-companies-hauts-de-seine) (159)
- [Cybersecurity companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/cybersecurity-companies-hauts-de-seine) (154)
- [Distributors and wholesalers in the Hauts-de-Seine department](https://www.tamtam.ai/l/distributors-and-wholesalers-hauts-de-seine) (154)
- [Recruitment and staffing agencies in the Hauts-de-Seine department](https://www.tamtam.ai/l/recruitment-agencies-hauts-de-seine) (152)
## The same list elsewhere in France
- [Telecommunications companies in France](https://www.tamtam.ai/l/telecommunications-companies-france) (461)
- [Telecommunications companies in Γle-de-France](https://www.tamtam.ai/l/telecommunications-companies-ile-de-france) (210)
- [Telecommunications companies in Auvergne-RhΓ΄ne-Alpes](https://www.tamtam.ai/l/telecommunications-companies-auvergne-rhone-alpes) (49)
- [Telecommunications companies in Provence-Alpes-CΓ΄te d'Azur](https://www.tamtam.ai/l/telecommunications-companies-provence-alpes-cote-dazur) (38)
- [Telecommunications companies in Occitanie](https://www.tamtam.ai/l/telecommunications-companies-occitanie) (31)
- [Telecommunications companies in Grand Est](https://www.tamtam.ai/l/telecommunications-companies-grand-est) (27)
- [Telecommunications companies in the RhΓ΄ne department](https://www.tamtam.ai/l/telecommunications-companies-rhone) (26)
- [Telecommunications companies in Paris](https://www.tamtam.ai/l/telecommunications-companies-paris) (77)
## The same list elsewhere
- [Telecommunications companies in the world](https://www.tamtam.ai/l/telecommunications-companies-in-the-world) (3,307)
- [Telecommunications companies in Europe](https://www.tamtam.ai/l/telecommunications-companies-in-europe) (1,294)
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Source: https://www.tamtam.ai/l/telecommunications-companies-hauts-de-seine