Company lists · Data refreshed November 2026

Top 25 Fiber optics companies based in Spain

RevenueBase identified 92 company matches for fiber optics companies associated with Spain as of November 2026 and tracks 1,237 professional contacts across them, including 192 with verified work emails. Madrid is the largest hub.

This list covers company matches for fiber optics companies associated with 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 November 6, 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 Nov 6, 2026 How this list was built
92Companies
1,237Contacts tracked
192Verified emails
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The 25 largest fiber optics companies based in Spain

Ranked by team size
Top 25 of 92 company matches for fiber optics companies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAlcobendas, SpainHQ recorded Nov 6, 2026201-500171 contacts →

Exact match

“lyntia is the leading wholesale optic fibre operator in Spain and Portugal, providing robust, flexible and sustainable connectivity solutions for the Telco and Cloud sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMálaga, SpainHQ recorded Nov 6, 2026501-1,000123 contacts →

Exact match

“Empresa cualificada y especializada en la instalación y mantenimiento de redes y equipos de telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchVillaviciosa De Odón, SpainHQ recorded Nov 6, 2026201-500120 contacts →

Exact match

“We invent, develop and manufacture passive elements for telecommunications networks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchZaragoza, SpainHQ recorded Nov 6, 2026201-500107 contacts →

Exact match

“Cablescom es una de las principales compañías europeas dedicadas al diseño, fabricación y comercialización de cables de telecomunicaciones, señalización y fibra óptica.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchIrun, SpainHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Lightmax SL empresa fundada en 2007 especializada en la fabricación y suministro de productos para redes pasivas de fibra óptica.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAs Pontes, SpainHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“Arteixo Telecom se constituye bajo su actual denominación social en 1996, aunque su trayectoria industrial bajo otras denominaciones sociales se remonta al año 1972, demostrando…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPozuelo De Alarcón, SpainHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Onivia es el operador mayorista de fibra óptica independiente y neutral, que está transformando el mercado de las telecomunicaciones en España.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAlcobendas, SpainHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“OPTRAL is a Spanish leader company, founded in 1988, engaged in fibre optic cable design, manufacture and worldwide known companies in the Telecom, Oil & Gas, Industry and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSan Ginés, SpainHQ recorded Nov 6, 202651-20031 contacts →

Exact match

“Somos una empresa de Ingeniería y consultora de telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchZaragoza, SpainHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Fibercom ofrece productos y servicios de Fibra óptica en el ámbito de las Telecomunicaciones, cubriendo la totalidad de actividades involucradas en el proceso: ingeniería de redes…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchZaragoza, SpainHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“Keynet nace en 2014 como empresa y marca como resultado de nuestra inquietud por ofrecer al mercado la más amplia línea de productos pasivos para redes de cable estructurado y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMutilva, SpainHQ recorded Nov 6, 20261-1019 contacts →

Exact match

“UPTECH SENSING SL is a company that manufactures monitoring systems based on fiber optic solutions providing reliable real-time monitoring for assets in the industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20014 contacts →

Exact match

“Ingeniería comprometida con la innovación, con amplia experiencia en el ámbito industrial y de las telecomunicaciones, así como en el desarrollo de software de integración.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5014 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchRibarroja, SpainHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“KEYFIBRE (KeyFibre Network Components, S.L.) is a company within the KeyInnovation group based in Valencia, Spain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchVilladangos Del Páramo, SpainHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Kyo Electric es una empresa dedicada al diseño, fabricación, distribución y alquiler de equipos especializados para empresas instaladoras de telecomunicaciones y operadoras de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Expertos en conexiones, soluciones y productos en fibra óptica, desde 1992.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLleida, SpainHQ recorded Nov 6, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchHuesca, SpainHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“En Góriz Telecomunicaciones somos más que una empresa del sector: somos el socio tecnológico en el que tu negocio puede apoyarse para crecer con seguridad y eficiencia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLa Muela, SpainHQ recorded Nov 6, 202651-2009 contacts →

Exact match

“TELNET Fiber Optic S.L.U.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCoruña, SpainHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Alumbra Instalaciones es una empresa dedicada a la realización y mantenimiento de instalaciones eléctricas y Telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSant Cugat Del Vallés, SpainHQ recorded Nov 6, 20261-108 contacts →

Exact match

“With over 25 years of experience, Tecnorep S.L.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSondika, SpainHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Después de casi 25 años seguimos en la vanguardia de las nuevas tecnologías, consolidándonos como una de las empresas pioneras dentro del sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMadrid, SpainHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Empresa especializada en la distribucción y fabricación de todo tipo de material de Telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMadrid, SpainHQ recorded Nov 6, 202611-503 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 · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 92 fiber optics companies based in Spain

See the full list, filter by size, metro and specialty, and access 192 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fiber optics companies based in Spain at a glance

As of Nov 6, 2026
15.5%Verified-email coverage
13.4Average contacts per company
11-50Median size (employees)
15.2%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
40
51-200
12
201-500
3
501-1,000
1

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 92 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 Spain whose business descriptions match “fiber optics 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 192 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 November 6, 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 optics companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fiber optics companies are there based in Spain?

RevenueBase identified 92 company matches for fiber optics companies associated with Spain as of November 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?

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

Which city has the most fiber optics companies?

Madrid leads with 14 company records, followed by Barcelona (8) and Murcia (5).

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 192 professional contacts with verified work emails tracked across these 92 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 November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase 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.