Company lists · Data refreshed September 2026

Top 25 Telecommunications companies based in Portugal

Name: Telecommunications companies based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 115 companies tracked

RevenueBase identified 115 telecommunications companies headquartered in Portugal as of September 2026 and tracks 3,579 professional contacts across them, including 477 with verified work emails and 82 with mobile numbers. Porto is the largest hub.

This list covers telecommunications companies headquartered in Portugal, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

115Companies

3,579Contacts tracked

477Verified emails

82Mobile numbers

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The 25 largest telecommunications companies based in Portugal

Ranked by team size

Top 25 of 115 telecommunications companies based in Portugal, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Digi Portugal	Indirect evidence	Lisbon, PortugalHQ checked Sep 6, 2026	1,001-5,000	581 contacts →
	“Estamos a construir o futuro das telecomunicações na Europa.” Source: company website · checked Sep 6, 2026
2	Optimus	Indirect evidence	Matosinhos, PortugalHQ checked Sep 6, 2026	1,001-5,000	408 contacts →
	“A Optimus foi lançada em 1998 como marca única de telecomunicações do universo Sonae.” Source: company website · checked Sep 6, 2026
3	Visabeira Global Sgps, SA	Strong evidence	Viseu, PortugalHQ checked Sep 6, 2026	5,001-10,000	377 contacts →
	“Visabeira Global SGPS, SA is organised into four distinct business areas- Telecommunications (network engineering and cable TV operations)- Energy (production, distribution and…” Source: company website · checked Sep 6, 2026
4	Telcabo S.A	Strong evidence	Lisbon, PortugalHQ checked Sep 6, 2026	1,001-5,000	313 contacts →
	“Telcabo, established in 1986, is a leading Telecommunications and Energy Services Provider with a global and complete End-to-End offer aimed to meet the most demanding customers.” Source: company website · checked Sep 6, 2026
5	Sonaecom	Strong evidence	Maia, PortugalHQ checked Sep 6, 2026	1,001-5,000	275 contacts →
	“Sonaecom is a holding actively managing a portfolio of companies aggregated in three main areas: Telecommunications, including mobile and fixed communications; Media; and Software…” Source: company website · checked Sep 6, 2026
6	Futurcabo	Indirect evidence	Carnaxide, PortugalHQ checked Sep 6, 2026	201-500	217 contacts →
	“A Futurcabo é uma empresa fundada em 1997, e com experiência comprovada como “Service Provider Global” da NOS nos Sistemas de Televisão e Internet.” Source: company website · checked Sep 6, 2026
7	Sinalcabo	Indirect evidence	Sintra, PortugalHQ checked Sep 6, 2026	501-1,000	134 contacts →
	“A SINALCABO iniciou a sua atividade em 1996 no sector das Telecomunicações, sendo a empresa mais antiga do Grupo, o qual integra também a Sinaltech (Soluções ICT Empresariais) e a…” Source: company website · checked Sep 6, 2026
8	Tlci- Soluções DE Telecomunicações, SA	Indirect evidence	Dume, PortugalHQ checked Sep 6, 2026	51-200	106 contacts →
	“É desde outubro de 1992 que a TLCI liga o seu mundo ao futuro, como um dos principais players a nível nacional no setor das telecomunicações e multimédia.” Source: company website · checked Sep 6, 2026
9	Setronix	Indirect evidence	Vialonga, PortugalHQ checked Sep 6, 2026	51-200	68 contacts →
	“Somos uma empresa 100% nacional, especialista na criação e implementação de soluções de telecomunicações.” Source: company website · checked Sep 6, 2026
10	Gizz, LDA	Indirect evidence	Sequeira, PortugalHQ checked Sep 6, 2026	51-200	57 contacts →
	“A Gizz é uma referência nacional no sector das telecomunicações e da energia, operando nos segmentos de Retalho, Revenda e Instalação & Manutenção, enquanto parceira dos…” Source: company website · checked Sep 6, 2026
11	Guimasete	Indirect evidence	Guimarães, PortugalHQ checked Sep 6, 2026	51-200	55 contacts →
	“Acompanhando a evolução do mercado na área de telecomunicações móveis e com o aparecimento da terceira operadora – Optimus, em final de 1998, é criada a empresa Guimasete –…” Source: company website · checked Sep 6, 2026
12	Acitel	Indirect evidence	São Domingos De Rana, PortugalHQ checked Sep 6, 2026	11-50	41 contacts →
	“ACITEL 4 - SERVIÇOS DE TELECOMUNICAÇÕES, S.A, Empresa integrada no Grupo ACITEL, com 30 anos de experiência no Mercado de Telecomunicações, tem conquistado uma posição de…” Source: company website · checked Sep 6, 2026
13	IP Telecom	Strong evidence	Lisbon, PortugalHQ checked Sep 6, 2026	51-200	40 contacts →
	“IP Telecom, Serviços de Telecomunicações S.A, is a public telecommunications operator licensed by ANACOM, specialized in high-capacity Fiber Optic and Connectivity services, with…” Source: company website · checked Sep 6, 2026
14	Mobile World Comunicações S.A	Indirect evidence	Braga, PortugalHQ checked Sep 6, 2026	51-200	40 contacts →
	“A Mobile World – Comunicações, S.A.” Source: company website · checked Sep 6, 2026
15	Vivanet	Indirect evidence	Porto, PortugalHQ checked Sep 6, 2026	11-50	30 contacts →
	“A Vivanet opera na distribuição de Banda Larga, Voz e Televisão desde 2004.” Source: company website · checked Sep 6, 2026
16	Bergfone Telecomunicações	Indirect evidence	Cacém, PortugalHQ checked Sep 6, 2026	51-200	26 contacts →
	“A Bergfone é o agente empresarial Vodafone nº 1 em vendas e um dos mais antigos.” Source: company website · checked Sep 6, 2026
17	Netlink S.A	Indirect evidence	Sintra, PortugalHQ checked Sep 6, 2026	201-500	20 contacts →
	“A Netlink tem um conhecimento alargado no setor das telecomunicações, possibilitando a apresentação de soluções integradas nas fases de projeto, planeamento, instalação e…” Source: company website · checked Sep 6, 2026
18	Rolloncell LDA	Indirect evidence	Alcoitão, PortugalHQ checked Sep 6, 2026	11-50	19 contacts →
	“A Rolloncell é uma empresa líder no setor de telecomunicações, fundada em 2003 com o objetivo de criar um espaço dinâmico e agregador que correspondesse aos mais elevados padrões…” Source: company website · checked Sep 6, 2026
19	Ribatel Connect	Indirect evidence	Santarém, PortugalHQ checked Sep 6, 2026	11-50	18 contacts →
	“O conceito de telecomunicações, é hoje, mais do que uma simples forma de conduzir as nossas expressões.” Source: company website · checked Sep 6, 2026
20	SNU Telecomunicações E Energia	Indirect evidence	Cacém, PortugalHQ checked Sep 6, 2026	11-50	13 contacts →
	“A SNU é um projeto jovem, integrado num grupo empresarial que atua no mercado das telecomunicações, desde 2012.” Source: company website · checked Sep 6, 2026
21	Rederia Innovation	Strong evidence	Vagos, PortugalHQ checked Sep 6, 2026	11-50	12 contacts →
	“We established in 1995 focusing our activities in providing services, implementing projects, installation and maintenance of telecommunication, telemetry and control networks.” Source: company website · checked Sep 6, 2026
22	Conecticabo LDA	Indirect evidence	Braga, PortugalHQ checked Sep 6, 2026	51-200	9 contacts →
	“A Conecticabo é uma empresa de Telecomunicações em progressivo crescimento, estando apta a prestar serviços em várias frentes, direta ou indiretamente para os grandes grupos de…” Source: company website · checked Sep 6, 2026
23	Maistel	Indirect evidence	Vizela, PortugalHQ checked Sep 6, 2026	11-50	8 contacts →
	“Somos mais.” Source: company website · checked Sep 6, 2026
24	Taistel, LDA	Indirect evidence	Maia, PortugalHQ checked Sep 6, 2026	11-50	7 contacts →
	“A Taistel é uma empresa dinâmica que importa e comercializa diversos produtos para a instalação e funcionamento de redes eléctricas e de telecomunicações (voz e dados).” Source: company website · checked Sep 6, 2026
25	Satcab	Indirect evidence	Vila Do Conde, PortugalHQ checked Sep 6, 2026	11-50	6 contacts →
	“Video and data, everywere, anywere!” Source: company website · checked Sep 6, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: telecommunications companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names telecommunications companies.
Partial evidence: Its own public description names part of telecommunications companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 115 telecommunications companies based in Portugal

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Telecommunications companies based in Portugal at a glance

As of Sep 6, 2026

13.3%Verified-email coverage

2.3%Mobile-number coverage

31.1Average contacts per company

11-50Median size (employees)

7.8%Largest-city concentration · Porto

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

4390–30

3831–60

061–90

090–180

0180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among telecommunications companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Portugal whose own description of what they do matches “telecommunications companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telecommunications companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among telecommunications companies, and records with no verified work email. Companies headquartered outside Portugal are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 477 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telecommunications companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telecommunications companies are there based in Portugal?

RevenueBase identified 115 telecommunications companies headquartered in Portugal as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Digi Portugal, headquartered in Portugal, tops this list with the largest team on record.

Which city has the most telecommunications companies?

Porto leads with 9 headquartered companies, followed by Lisboa (8) and Matosinhos (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 477 verified decision-maker contacts tracked across these 115 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.