Company lists · Data refreshed September 2026
Top 12 Fiber optic telecommunications companies based in Madrid, Spain
RevenueBase identified 29 company matches for fiber optic telecommunications companies associated with Madrid, Spain as of September 2026 and tracks 5,335 professional contacts across them, including 393 with verified work emails. Across Spain, Madrid is the largest hub for this category.
This list covers company matches for fiber optic 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 30, 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 12 largest fiber optic telecommunications companies based in Madrid, Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,182 contacts → | ||||
Exact match “UFINET is a Latin American carrier of carriers providing high-quality solutions in the wholesale telecom market.” Recorded in the RevenueBase company graph · Sep 30, 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 30, 2026 · View company records in RevenueBase | |||||
| 3 | 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 30, 2026 · View company records in RevenueBase | |||||
| 4 | 41 contacts → | ||||
Exact match “Silbö es la nueva telco que solo te contará cosas que suenan bien.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 5 | 26 contacts → | ||||
Exact match “Somos un operador de red que ofrece servicios mayoristas de acceso FTTH y otros servicios de conectividad sobre tecnología de fibra.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 6 | 15 contacts → | ||||
Exact match “Axent is a carrier-neutral wholesale operator for Telecom infrastructure services in backbone, backhaul and access connectivity.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 7 | 13 contacts → | ||||
Exact match “Expertos en conexiones, soluciones y productos en fibra óptica, desde 1992.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 8 | 11 contacts → | ||||
Exact match “Somos una empresa dedicada a brindar soluciones para el despliegue y mantenimiento de infraestructura de redes de telecomunicaciones, especialmente las que requieren del uso de…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 9 | 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 30, 2026 · View company records in RevenueBase | |||||
| 10 | 8 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 11 | 3 contacts → | ||||
Exact match “Iberfibra e Iberfibra Fibra Óptica son marcas comerciales registradas de Iberfibra Gestión de Redes de Banda Ancha S.A.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 12 | 3 contacts → | ||||
Exact match “Empresa especializada en la distribucción y fabricación de todo tipo de material de Telecomunicaciones.” Recorded in the RevenueBase company graph · Sep 30, 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 “fiber optic 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 12 of 29 fiber optic telecommunications companies based in Madrid, Spain
See the full list, filter by size, metro and specialty, and access 393 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Fiber optic telecommunications companies based in Madrid, Spain at a glance
As of Sep 30, 2026Companies by employee count
Email recency for this list is measured across the whole Spain list rather than for Madrid, so it is reported there. Company counts and contact totals on this page are exact for Madrid, over 29 companies.
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 “fiber optic 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 393 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 30, 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.
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 “fiber optic telecommunications companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many fiber optic telecommunications companies are there based in Madrid, Spain?
RevenueBase identified 29 company matches for fiber optic 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?
Ufinet tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in Spain has the most fiber optic telecommunications companies?
Madrid leads Spain with 29 company records, followed by Murcia (13) and Barcelona (11).
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 393 professional contacts with verified work emails tracked across these 29 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 30, 2026.
Ready to reach these companies? Verified emails and direct dials for all 29 fiber optic telecommunications companies based in Madrid, Spain. Start with a free account, no credit card.
Download this list →Related lists
Fiber optic telecommunications companies by geography
- Fiber optic telecommunications companies based in Dhaka, Bangladesh
- Fiber optic telecommunications companies based in Rio De Janeiro, Brazil
- Fiber optic telecommunications companies based in Sao Paulo, Brazil
- Fiber optic telecommunications companies based in Mumbai, India
- Fiber optic telecommunications companies based in Cape Town, South Africa
- Fiber optic telecommunications companies based in Johannesburg, South Africa
- Fiber optic telecommunications companies based in London, United Kingdom
- Fiber optic telecommunications companies based in Houston, United States
- Fiber optic telecommunications companies based in Miami, United States
- Fiber optic telecommunications companies based in New York, United States
- Fiber optic telecommunications companies based in Argentina
- Fiber optic telecommunications companies based in Australia
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
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- Lists A-Z
- New lists
- Fiber optic telecommunications companies based in Dhaka, Bangladesh
- Fiber optic telecommunications companies based in Rio De Janeiro, Brazil
- Fiber optic telecommunications companies based in Sao Paulo, Brazil
- Fiber optic telecommunications companies based in Mumbai, India
- Fiber optic telecommunications companies based in Cape Town, South Africa
- Fiber optic telecommunications companies based in Johannesburg, South Africa
Company intelligence · public preview
Top 12 fiber optic 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 29 matching company records for fiber optic telecommunications companies based in Madrid, Spain, with 5,335 tracked contacts and 393 verified work emails.
This public preview shows 12 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 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 12 fiber optic 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 | Ufinetufinet.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,182 contacts → |
“UFINET is a Latin American carrier of carriers providing high-quality solutions in the wholesale telecom market.” Recorded description excerpt · September 30, 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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Bluevíabluevia.esHQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 26 contacts → |
“Somos un operador de red que ofrece servicios mayoristas de acceso FTTH y otros servicios de conectividad sobre tecnología de fibra.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  AXENTaxent.esHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 15 contacts → |
“Axent is a carrier-neutral wholesale operator for Telecom infrastructure services in backbone, backhaul and access connectivity.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Fiberco Instrumentación Industrial SLfiberco.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 13 contacts → |
“Expertos en conexiones, soluciones y productos en fibra óptica, desde 1992.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Digatel Telecomunicacionesdigateltelecom.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 11 contacts → |
“Somos una empresa dedicada a brindar soluciones para el despliegue y mantenimiento de infraestructura de redes de telecomunicaciones, especialmente las que requieren del uso de…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Elantaelanta.comHQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 11 | Iberfibra Fibra Ópticaiberfibra.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 3 contacts → |
“Iberfibra e Iberfibra Fibra Óptica son marcas comerciales registradas de Iberfibra Gestión de Redes de Banda Ancha S.A.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Lirbaticlirbatic.com HQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 3 contacts → |
“Empresa especializada en la distribucción y fabricación de todo tipo de material de Telecomunicaciones.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 12 of 29 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
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Fiber optic telecommunications companies: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
29 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Spain list rather than for Madrid, so it is reported there. Company counts and contact totals on this page are exact for Madrid, over 29 companies.
How 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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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 30, 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 ↗
Questions about this company list
What does Exact match mean for fiber optic 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 fiber optic telecommunications companies did RevenueBase find based in Madrid, Spain?
The saved snapshot records 29 matching company records, 5,335 tracked contacts and 393 verified emails. The public preview displays 12 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 30, 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
Fiber optic telecommunications companies by geography
- Fiber optic telecommunications companies based in Dhaka, Bangladesh
- Fiber optic telecommunications companies based in Rio De Janeiro, Brazil
- Fiber optic telecommunications companies based in Sao Paulo, Brazil
- Fiber optic telecommunications companies based in Mumbai, India
- Fiber optic telecommunications companies based in Cape Town, South Africa
- Fiber optic telecommunications companies based in Johannesburg, South Africa
- Fiber optic telecommunications companies based in London, United Kingdom
- Fiber optic telecommunications companies based in Houston, United States
- Fiber optic telecommunications companies based in Miami, United States
- Fiber optic telecommunications companies based in New York, United States
- Fiber optic telecommunications companies based in Argentina
- Fiber optic telecommunications companies based in Australia
Cite this list
RevenueBase Data Team. Top 12 fiber optic telecommunications companies based in Madrid, Spain. Snapshot: September 30, 2026. https://revenuebase.ai/companies/fiber-optic-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
- Fiber optic telecommunications companies based in Dhaka, Bangladesh
- Fiber optic telecommunications companies based in Rio De Janeiro, Brazil
- Fiber optic telecommunications companies based in Sao Paulo, Brazil
- Fiber optic telecommunications companies based in Mumbai, India
- Fiber optic telecommunications companies based in Cape Town, South Africa
- Fiber optic telecommunications companies based in Johannesburg, South Africa
Company intelligence · public preview
Top 12 fiber optic telecommunications companies based in Madrid, Spain
RevenueBase records 29 matching company records for fiber optic telecommunications companies based in Madrid, Spain, with 5,335 tracked contacts and 393 verified work emails.
This public preview shows 12 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 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 12 fiber optic 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 | Ufinetufinet.com HQ: Madrid, SpainReported employees: 1,001-5,000 | Madrid, Spain | 1,001-5,000 | Exact match | 1,182 contacts → |
“UFINET is a Latin American carrier of carriers providing high-quality solutions in the wholesale telecom market.” Recorded description excerpt · September 30, 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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Bluevíabluevia.es HQ: Madrid, SpainReported employees: 51-200 | Madrid, Spain | 51-200 | Exact match | 26 contacts → |
“Somos un operador de red que ofrece servicios mayoristas de acceso FTTH y otros servicios de conectividad sobre tecnología de fibra.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | AXENTaxent.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 15 contacts → |
“Axent is a carrier-neutral wholesale operator for Telecom infrastructure services in backbone, backhaul and access connectivity.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Fiberco Instrumentación Industrial SLfiberco.es HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 13 contacts → |
“Expertos en conexiones, soluciones y productos en fibra óptica, desde 1992.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Digatel Telecomunicacionesdigateltelecom.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 11 contacts → |
“Somos una empresa dedicada a brindar soluciones para el despliegue y mantenimiento de infraestructura de redes de telecomunicaciones, especialmente las que requieren del uso de…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Elantaelanta.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 11 | Iberfibra Fibra Ópticaiberfibra.com HQ: Madrid, SpainReported employees: 11-50 | Madrid, Spain | 11-50 | Exact match | 3 contacts → |
“Iberfibra e Iberfibra Fibra Óptica son marcas comerciales registradas de Iberfibra Gestión de Redes de Banda Ancha S.A.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Lirbaticlirbatic.com HQ: Madrid, SpainReported employees: 1-10 | Madrid, Spain | 1-10 | Exact match | 3 contacts → |
“Empresa especializada en la distribucción y fabricación de todo tipo de material de Telecomunicaciones.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 12 of 29 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Fiber optic telecommunications companies: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
29 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Spain list rather than for Madrid, so it is reported there. Company counts and contact totals on this page are exact for Madrid, over 29 companies.
How 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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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 30, 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 ↗
Questions about this company list
What does Exact match mean for fiber optic 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 fiber optic telecommunications companies did RevenueBase find based in Madrid, Spain?
The saved snapshot records 29 matching company records, 5,335 tracked contacts and 393 verified emails. The public preview displays 12 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 30, 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
Fiber optic telecommunications companies by geography
- Fiber optic telecommunications companies based in Dhaka, Bangladesh
- Fiber optic telecommunications companies based in Rio De Janeiro, Brazil
- Fiber optic telecommunications companies based in Sao Paulo, Brazil
- Fiber optic telecommunications companies based in Mumbai, India
- Fiber optic telecommunications companies based in Cape Town, South Africa
- Fiber optic telecommunications companies based in Johannesburg, South Africa
- Fiber optic telecommunications companies based in London, United Kingdom
- Fiber optic telecommunications companies based in Houston, United States
- Fiber optic telecommunications companies based in Miami, United States
- Fiber optic telecommunications companies based in New York, United States
- Fiber optic telecommunications companies based in Argentina
- Fiber optic telecommunications companies based in Australia
Cite this list
RevenueBase Data Team. Top 12 fiber optic telecommunications companies based in Madrid, Spain. Snapshot: September 30, 2026. https://revenuebase.ai/companies/fiber-optic-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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