Company lists · Data refreshed September 2026
Top 21 Telecommunications companies based in Madrid, Spain
RevenueBase identified 104 company matches for telecommunications companies associated with Madrid, Spain as of September 2026 and tracks 61,069 professional contacts across them, including 6,333 with verified work emails and 399 with mobile numbers. Across Spain, Madrid is the largest hub for this category.
This list covers company matches for telecommunications 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.
The 21 largest telecommunications companies based in Madrid, Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 | 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 | 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 | 294 contacts → | ||||
Exact match “As the world’s needs for uninterrupted global interconnectivity continue to rise, we are preparing the road ahead.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 5 | 184 contacts → | ||||
Exact match “Quiénes somos?” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 6 | 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 | |||||
| 7 | 88 contacts → | ||||
Exact match “Coyser S.A.” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 8 | 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 | |||||
| 9 | 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 | |||||
| 10 | 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 | |||||
| 11 | 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 | |||||
| 12 | 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 | |||||
| 13 | 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 | |||||
| 14 | 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 | |||||
| 15 | 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 | |||||
| 16 | 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 | |||||
| 17 | 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 | |||||
| 18 | 2 contacts → | ||||
Exact match “Areas de actividad: 1- Consultoría de telecomunicaciones 2- Instalación y mantenimiento de redes informáticas 3- Consultoría de marketing” Recorded in the RevenueBase company graph · Sep 13, 2026 · View company records in RevenueBase | |||||
| 19 | 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 | |||||
| 20 | 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 | 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 “telecommunications 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 21 of 104 telecommunications companies based in Madrid, Spain
See the full list, filter by size, metro and specialty, and access 6,333 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Telecommunications companies based in Madrid, Spain at a glance
As of Sep 13, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 16.0dCompany record updated
Median 81.0dHow 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 “telecommunications 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 6,333 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.
Telecommunications companies by metro in Spain
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 “telecommunications companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many telecommunications companies are there based in Madrid, Spain?
RevenueBase identified 104 company matches for telecommunications 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 telecommunications companies?
Madrid leads Spain with 111 company records, followed by Barcelona (49) and Murcia (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 6,333 professional contacts with verified work emails tracked across these 104 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.
Ready to reach these companies? Verified emails and direct dials for all 104 telecommunications companies based in Madrid, Spain. Start with a free account, no credit card.
Download this list →Related lists
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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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Telecommunications companies based in the United States
- Telecommunications companies based in Brazil
- Telecommunications companies based in the United Kingdom
- Telecommunications companies based in Spain
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Company intelligence · public preview
Top 21 telecommunications companies based in Madrid, Spain
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 104 matching company records for telecommunications companies based in Madrid, Spain, with 61,069 tracked contacts and 6,333 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 telecommunications companies based in Madrid, Spain
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Telefónicatelefonica.comHQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 54,718 contacts → |
“Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Avatel Telecomavatel.esHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 698 contacts → |
“Somos Avatel Telecom, compañía de telecomunicaciones en España.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Vodafone Españavodafone.esHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 613 contacts → |
“Vodafone España es una empresa de telecomunicaciones con más de 15 millones de clientes.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Telxiustelxius.comHQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 294 contacts → |
“As the world’s needs for uninterrupted global interconnectivity continue to rise, we are preparing the road ahead.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Telyco Seleccióntelyco-grupotelefonica.ofertas-trabajo.infojobs.netHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 184 contacts → |
“Quiénes somos?” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Telecortelecor.esHQ: Madrid, SpainReported employees: 501-1,000 | Madrid, Spain | 501-1,000 | Exact match | 140 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Coyser SAcoyser.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 88 contacts → |
“Coyser S.A.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  B2comb2com.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 72 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Huawei CBG Españaconsumer.huawei.comHQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 66 contacts → |
“La misión de Huawei se basa en su propósito de enriquecer la vida a través de la comunicación.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Silbö Telecomsilbotelecom.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 41 contacts → |
“Silbö es la nueva telco que solo te contará cosas que suenan bien.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Olin Groupolingroup.esHQ: Madrid, SpainReported employees: Not recorded | Madrid, Spain | Not recorded | Exact match | 32 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Smartgroupsmartgroup.esHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 26 contacts → |
“We are a leading provider of Telecommunications services for large companies, SMEs, self-employed professionals, and individuals.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Hiper Antenahiperantena.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 18 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Balesia Technologies, INCbalesia.comHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 13 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  MINTTmintt.esHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 10 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  TEL Iberica SAteltelecom.com.brHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 10 contacts → |
“Tel Telecomunicaciones es una de las empresas más importantes y cualificadas para prestar servicios en el campo de las telecomunicaciones.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Lineoxlineox.esHQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 9 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Comvenza Consultoríacomvenza.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 2 contacts → |
“Areas de actividad: 1- Consultoría de telecomunicaciones 2- Instalación y mantenimiento de redes informáticas 3- Consultoría de marketing” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  infocaller.cominfocaller.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 2 contacts → |
“Infocaller combines the latest telecommunications technologies with the power of the internet in order to provide simple yet powerful communication services for companies…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 2 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Silvan Comunicacionessilvancomunicaciones.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 1 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 104 company matches
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Telecommunications companies: dataset insights
September 13, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
103 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 16.0dCompany record updated
Median 81.0dHow this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Telecommunications companies by metro in Spain
Questions about this company list
What does Exact match mean for telecommunications companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many telecommunications companies did RevenueBase find based in Madrid, Spain?
The saved snapshot records 104 matching company records, 61,069 tracked contacts and 6,333 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Telecommunications companies by geography
- Telecommunications companies based in the United States
- Telecommunications companies based in Brazil
- Telecommunications companies based in the United Kingdom
- Telecommunications companies based in Spain
- Telecommunications companies based in Italy
- Telecommunications companies based in France
- Telecommunications companies based in Canada
- Telecommunications companies based in Germany
- Telecommunications companies based in Australia
- Telecommunications companies based in Mexico
- Telecommunications companies based in South Africa
- Telecommunications companies based in the Netherlands
Cite this list
RevenueBase Data Team. Top 21 telecommunications companies based in Madrid, Spain. Snapshot: September 13, 2026. https://revenuebase.ai/companies/telecommunications-companies/spain/madrid.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Telecommunications companies based in the United States
- Telecommunications companies based in Brazil
- Telecommunications companies based in the United Kingdom
- Telecommunications companies based in Spain
- Telecommunications companies based in Italy
- Telecommunications companies based in France
Company intelligence · public preview
Top 21 telecommunications companies based in Madrid, Spain
RevenueBase records 104 matching company records for telecommunications companies based in Madrid, Spain, with 61,069 tracked contacts and 6,333 verified work emails.
This public preview shows 21 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 13, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 21 telecommunications companies based in Madrid, Spain
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Telefónicatelefonica.com HQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 54,718 contacts → |
“Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Avatel Telecomavatel.es HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 698 contacts → |
“Somos Avatel Telecom, compañía de telecomunicaciones en España.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Vodafone Españavodafone.es HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 613 contacts → |
“Vodafone España es una empresa de telecomunicaciones con más de 15 millones de clientes.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Telxiustelxius.com HQ: Madrid, SpainReported employees: 201-500 | Madrid, Spain | 201-500 | Exact match | 294 contacts → |
“As the world’s needs for uninterrupted global interconnectivity continue to rise, we are preparing the road ahead.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Telyco Seleccióntelyco-grupotelefonica.ofertas-trabajo.infojobs.net HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 184 contacts → |
“Quiénes somos?” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Telecortelecor.es HQ: Madrid, SpainReported employees: 501-1,000 | Madrid, Spain | 501-1,000 | Exact match | 140 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Coyser SAcoyser.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 88 contacts → |
“Coyser S.A.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | B2comb2com.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 72 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Huawei CBG Españaconsumer.huawei.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 66 contacts → |
“La misión de Huawei se basa en su propósito de enriquecer la vida a través de la comunicación.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Silbö Telecomsilbotelecom.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 41 contacts → |
“Silbö es la nueva telco que solo te contará cosas que suenan bien.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Olin Groupolingroup.es HQ: Madrid, SpainReported employees: Not recorded | Madrid, Spain | Not recorded | Exact match | 32 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Smartgroupsmartgroup.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 26 contacts → |
“We are a leading provider of Telecommunications services for large companies, SMEs, self-employed professionals, and individuals.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Hiper Antenahiperantena.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 18 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Balesia Technologies, INCbalesia.com HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 13 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | MINTTmintt.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 10 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | TEL Iberica SAteltelecom.com.br HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 10 contacts → |
“Tel Telecomunicaciones es una de las empresas más importantes y cualificadas para prestar servicios en el campo de las telecomunicaciones.” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Lineoxlineox.es HQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 9 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Comvenza Consultoríacomvenza.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 2 contacts → |
“Areas de actividad: 1- Consultoría de telecomunicaciones 2- Instalación y mantenimiento de redes informáticas 3- Consultoría de marketing” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | infocaller.cominfocaller.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 2 contacts → |
“Infocaller combines the latest telecommunications technologies with the power of the internet in order to provide simple yet powerful communication services for companies…” Recorded description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 2 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Silvan Comunicacionessilvancomunicaciones.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 1 contacts → |
“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 description excerpt · September 13, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 21 of 104 company matches
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Telecommunications companies: dataset insights
September 13, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
103 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 16.0dCompany record updated
Median 81.0dHow this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 13, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Telecommunications companies by metro in Spain
Questions about this company list
What does Exact match mean for telecommunications companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many telecommunications companies did RevenueBase find based in Madrid, Spain?
The saved snapshot records 104 matching company records, 61,069 tracked contacts and 6,333 verified emails. The public preview displays 21 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 13, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 21 telecommunications companies based in Madrid, Spain. Snapshot: September 13, 2026. https://revenuebase.ai/companies/telecommunications-companies/spain/madrid.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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