These telecommunications companies in Belgium span a range of activities, from established providers of connectivity to specialized infrastructure builders and service enablers. They include large groups like Proximus Group, which offers connectivity and digital services in Benelux, and Telenet Group, a major provider of media and telecommunications services. Mid-sized firms such as Circet Benelux focus on building fiber optic networks, while BICS connects communities through global voice and messaging.
Several companies on this list are headquartered in Mechelen, including Telenet Group, Telenet Business, Unit-T, and BASE, indicating a concentration of telecommunications expertise in that city. Other key players include VOO, a Wallonia and Brussels-based provider of high-speed internet, and Dstny, a European leader in secure cloud communications.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Proximus Groupproximus.com
Provider of connectivity and digital services in Benelux and global markets, investing in networks, digital ecosystems, and innovative communication solutions. |
13,297 | |||
| 2 |
Telenet grouptelenet.be
A leading provider of media, telecommunications, and entertainment services in Belgium, offering seamless connectivity, innovative products, and superior customer experiences across three main brands |
4,238 | |||
| 3 |
Circet Beneluxcircet-benelux.eu
Building and managing vital infrastructure with expertise in fiber optic networks, mobile telecom, EV charging stations, and smart meters across borders |
1,071 | |||
| 4 | 893 | ||||
| 5 | 685 | ||||
| 6 |
Telenet Businesswww2.telenet.be
Telenet Business provides Belgian entrepreneurs with digital solutions including connectivity, network, security, and IT services, ensuring a smooth digital flow for businesses of all sizes |
656 | |||
| 7 | 633 | ||||
| 8 | 509 | ||||
| 9 |
N-ALLO - ENGIE GROUPn-allo.be
Provides multichannel customer interaction solutions including sales, marketing, customer service, and digital communication management across several European markets. |
486 | |||
| 10 |
BASE (Telenet group)base.be
Enabling customers to live a truly mobile life with competitive tariff plans, business solutions, and top-notch network quality Visit basebe/business |
413 | |||
| 11 | 307 | ||||
| 12 |
Scarletscarlet.be
A Belgian provider offering telecommunication services including fixed and mobile telephony, internet, and digital TV Committed to affordability, accessibility, and growth |
266 | |||
| 13 | 262 | ||||
| 14 | 236 | ||||
| 15 |
Citymeshcitymesh.com
A leading Belgian technology solutions provider specializing in delivering innovative connectivity solutions using WiFi, 0G, 4G, and 5G technologies across various sectors |
215 | |||
| 16 | 175 | ||||
| 17 | 170 | ||||
| 18 |
Proximus - One-Telecom (Partner)one-telecom.be
Comprehensive telecommunications solutions provider offering end-to-end services for all telecom needs |
168 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 19 | 160 | ||||
| 20 | 129 | ||||
| 21 |
Eurofiber Belgiumeurofiber.com
Provider of open digital infrastructure in multiple countries, offering cloud infra and connectivity solutions through a vast fiberoptic network and data centers |
94 | |||
| 22 |
Artiliumpareteum.com
Innovative communication platform empowering telecom operators globally to offer voice, SMS, data services and IoT solutions for over 100 companies |
71 | |||
| 23 |
SEE Telecomseetelecom.com
A provider of innovative radio communication technology for confined areas, specializing in designing easy-to-install systems for public safety networks and major infrastructures |
55 | |||
| 24 |
Netaxis Solutionsnetaxis.be
Netaxis simplifies telco solutions through automation, APIs, and software development, enabling business growth by cutting costs and streamlining processes |
49 | |||
| 25 |
CAPTEL S.A.captel.be
A leading call center in Belgium with a young and dynamic team offering services to businesses, professionals, and independents including market studies and appointment scheduling |
41 | |||
| 26 |
Telavox - Benelux/Francetelavox.com
Cloud-based telephony and collaboration services offered in multiple languages for seamless communication and teamwork within organizations |
36 | |||
| 27 |
ESTELe-s-tel.com
European Optical transceivers manufacturer focused on increasing sovereignty and sustainability in the market by providing cutting-edge, high-efficiency solutions for telecom and datacom businesses |
33 | |||
| 28 | 23 | ||||
| 29 |
seba service nvseba.be
Seba Service provides a wide range of physical network connectivity solutions, testing equipment, and specialized tools for underground cable detection Building reliable and innovative relationships |
21 | |||
| 30 |
RideOnTrackrideontrack.com
Develops digital communication solutions for mission-critical infrastructure, specializing in operational systems for railway safety, efficiency, and transition to future mobile communication standards. |
20 | |||
| 31 |
TEKSAM COMPANY NVteksamco.com
Design and manufacture of telescopic masts, portable LED lighting units, and maintenance-free compressors for military communications, broadcasting, surveillance, and emergency vehicle applications. |
15 | |||
| 32 |
Back2Buzz Groupback2buzz.eu
An European company specializing in refurbished smartphones and eco-friendly accessories, awarded for sustainable refurbishment solutions with Solar Impulse Efficient Solution label |
13 | |||
| 33 |
Connect-ITconnect-it.tv
A company specializing in providing smart solutions and connectivity in the complex world of IoT for organizations and consumers |
9 | |||
| 34 |
UC Experts - Value Added UC Distributorucexperts.eu
A one-stop-distributor specializing in Unified Communications & VoIP solutions, offering SIP trunking, hosting, technical support, and a variety of VoIP products from leading vendors |
7 | |||
| 35 |
HF Electronicshfelectronics.be
Specializing in professional wireless radio communication solutions, including ATEX, for various industries Offers sales, rental, repair, and maintenance services with a focus on quality and customer satisfaction |
6 | |||
| 36 |
PS: Radiocomps-radiocom.be
Specializing in critical communication solutions, offering a full-service concept including radios, rentals, network integration, and custom solutions with flexibility and expertise |
3 | |||
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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.
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