Company lists · Data refreshed September 2026

Top 22 Telecommunication companies based in Madrid, Spain

Name: Telecommunication companies based in Madrid, Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 108 companies tracked

RevenueBase identified 108 company matches for telecommunication companies associated with Madrid, Spain as of September 2026 and tracks 60,630 professional contacts across them, including 6,287 with verified work emails and 377 with mobile numbers. Across Spain, Madrid is the largest hub for this category.

This list covers company matches for telecommunication companies associated with Madrid, Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 13, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 13, 2026 How this list was built

108Companies

60,630Contacts tracked

6,287Verified emails

377Mobile numbers

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The 22 largest telecommunication companies based in Madrid, Spain

Ranked by team size

Top 22 of 108 company matches for telecommunication companies based in Madrid, Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 13, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Telefónica	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	10001+	54,718 contacts →
	Exact match “Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
2	Avatel Telecom	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	1,001-5,000	698 contacts →
	Exact match “Somos Avatel Telecom, compañía de telecomunicaciones en España.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
3	Vodafone España	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	1,001-5,000	613 contacts →
	Exact match “Vodafone España es una empresa de telecomunicaciones con más de 15 millones de clientes.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
4	Telecor	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	501-1,000	140 contacts →
	Exact match “TELECOR, S.A, somos una empresa del Grupo El Corte Inglés que comenzamos nuestra actividad en marzo de 1995 comercializando y prestando servicios de Telecomunicaciones y, a partir…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
5	Coyser SA	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	51-200	88 contacts →
	Exact match “Coyser S.A.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
6	B2com	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	51-200	72 contacts →
	Exact match “Premium Numbers, operador de telecomunicaciones inscrito en la CMT y con numeración propia, fue fundada en el año 2.001, siendo una de las empresas del sector de la telefonía de…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
7	Huawei CBG España	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	1,001-5,000	66 contacts →
	Exact match “La misión de Huawei se basa en su propósito de enriquecer la vida a través de la comunicación.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
8	Soditel	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	55 contacts →
	Exact match “SODITEL NUEVO PARTNER TECNOLÓGICO DE AASTRA EN ESPAÑA El gran nivel profesional y su avalada y reconocida garantía en la prestación de servicios profesionales, han convertido a…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
9	Silbö Telecom	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	41 contacts →
	Exact match “Silbö es la nueva telco que solo te contará cosas que suenan bien.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
10	Olin Group	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	n/a	32 contacts →
	Exact match “At Olin Group we are experts in telecommunications services in the regional market; both for wholesalers, with our high-speed Olinfra network, and for retailers through the…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
11	Smartgroup	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	26 contacts →
	Exact match “We are a leading provider of Telecommunications services for large companies, SMEs, self-employed professionals, and individuals.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
12	Comunica Telecomunicaciones	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	23 contacts →
	Exact match “In Comunica we offer connectivity solutions, telephony, IoT and cloud services tailored for businesses.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
13	Tecnimart Comunicaciones	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	22 contacts →
	Exact match “Desde 1989, en TECNIMART estamos dedicados al desarrollo de proyectos de telecomunicaciones dentro y fuera de España en los sectores de Sanidad Hospitales, Seguros, Automoción y…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
14	Hiper Antena	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	18 contacts →
	Exact match “Con una trayectoria de más de 30 años y una dilatada y sólida experiencia en el sector de las Telecomunicaciones, Hiper Antena ofrece al profesional todo los productos con la…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
15	Balesia Technologies, INC	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	51-200	13 contacts →
	Exact match “Balesia Technologies Inc, part of the Balesia group, an American company with more than 40 years of experience and telecommunications management experience in more than 60…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
16	MINTT	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	10 contacts →
	Exact match “Mintt es el operador de telecomunicaciones (licencia de la CMT) especializado en servicios para empresas, que automatizan los procesos de atención de sus usuarios.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
17	TEL Iberica SA	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	51-200	10 contacts →
	Exact match “Tel Telecomunicaciones es una de las empresas más importantes y cualificadas para prestar servicios en el campo de las telecomunicaciones.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
18	Lineox	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	1-10	9 contacts →
	Exact match “Lineox es una compañía creada por Asterion Industrial Partners - firma de inversión independiente - tras adquirir toda la red de radioenlaces de Telefónica en España.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
19	Oasip. Servicio Integral DE Comunicaciones	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	1-10	5 contacts →
	Exact match “Servicio Integral de Comunicaciones Soluciones de Telefonía Móvil Planes claros Tarifas únicas Sin Permanencia Soluciones de Centralita Virtual Voz IP con la máxima calidad y…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
20	Digital Solutions & Global Cloud GOC	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	2 contacts →
	Exact match “Nuestra misión desde DSGC es ofrecer y gestionar servicios digitales para poder administrar las telecomunicaciones de cualquier compañía, desde el puesto de trabajo hasta la…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
21	infocaller.com	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	2 contacts →
	Exact match “Infocaller combines the latest telecommunications technologies with the power of the internet in order to provide simple yet powerful communication services for companies…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase
22	Silvan Comunicaciones	Exact match	Madrid, SpainHQ recorded Sep 13, 2026	11-50	1 contacts →
	Exact match “Silvan comunicaciones nace en el año 2013, como resultado del análisis del mercado de las telecomunicaciones en constante evolución, y ante la necesidades de muchos sus clientes…” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “telecommunication companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 22 of 108 telecommunication companies based in Madrid, Spain

See the full list, filter by size, metro and specialty, and access 6,287 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecommunication companies based in Madrid, Spain at a glance

As of Sep 13, 2026

10.4%Verified-email coverage

0.6%Mobile-number coverage

561.4Average contacts per company

11-50Median size (employees)

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

4,3150–30

1,25631–60

2061–90

390–180

693180+

Company record updated

Median 81.0d

00–30

13,44431–60

36,47961–90

8,66890–180

2,039180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Madrid, Spain whose business descriptions match “telecommunication companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 6,287 professional contacts with verified work emails across the full matched dataset. 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 13, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Telecommunication companies by metro in Spain

Telecommunication companies in Barcelona49

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “telecommunication companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecommunication companies are there based in Madrid, Spain?

RevenueBase identified 108 company matches for telecommunication companies associated with Madrid, Spain as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Telefónica tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Spain has the most telecommunication companies?

Madrid leads Spain with 106 company records, followed by Barcelona (49) and Malaga (22).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 6,287 professional contacts with verified work emails tracked across these 108 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 13, 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 SmartSearch, 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.