Company lists · Data refreshed November 2026

Top 25 Fiber optic service providers based in Spain

RevenueBase identified 246 company matches for fiber optic service providers associated with Spain as of November 2026 and tracks 7,741 professional contacts across them, including 529 with verified work emails. Madrid is the largest hub.

This list covers company matches for fiber optic service providers 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
246Companies
7,741Contacts tracked
529Verified emails
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The 25 largest fiber optic service providers based in Spain

Ranked by team size
Top 25 of 246 company matches for fiber optic service providers 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, 202610001+2,923 contacts →

Exact match

“DIGI es una empresa que pertenece a la multinacional DIGI Communications, con 30 años de experiencia en el sector de las telecomunicaciones y presente en España desde 2008 donde…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Nov 6, 20261,001-5,000750 contacts →

Exact match

“Somos Avatel Telecom, compañía de telecomunicaciones en España.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCórdoba, SpainHQ recorded Nov 6, 2026501-1,000465 contacts →

Exact match

“Con un completo servicio de Televisión, Internet de fibra óptica, Telefonía Fija y Móvil, PTV Telecom se presenta como una empresa de telecomunicaciones con más de 40 años de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPozuelo De Alarcón, SpainHQ recorded Nov 6, 20261,001-5,000464 contacts →

Exact match

“ONO es la compañía de comunicación y entretenimiento por fibra óptica líder en España.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-200306 contacts →

Exact match

“Adamo is a telecom operator with Swedish origin operating in Spain since 2007.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact 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
7Exact matchAlicante, SpainHQ recorded Nov 6, 2026201-500139 contacts →

Exact match

“Cableworld es la compañía de servicios de telecomunicaciones por fibra óptica líder en en sus zonas de influencia, en la que ofrecemos de manera integrada servicios de Internet…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact 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
9Exact matchIllescas, SpainHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“Somos la Fibra Óptica que te conecta desde la España rural”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAlbal, SpainHQ recorded Nov 6, 2026201-50053 contacts →

Exact match

“Somos una compañía con una dilatada experiencia ubicada en el sector de las nuevas tecnologías, como operador nacional de telecomunicaciones nuestra actividad se centra en…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMotril, SpainHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Tarifa plana de calidad y buen servicio.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSabadell, SpainHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Confiamos en que nuestros valores y filosofía nos van a llevar muy lejos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact 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
14Exact matchMurcia, SpainHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“FIBRANET | Operador Nacional de Telecomunicaciones FIBRANET es un operador de telecomunicaciones con más de 30 años de experiencia en el sector perteneciente a Olin Group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact 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
16Exact matchZaragoza, SpainHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Somos la operadora aragonesa líder en red de acceso a banda ancha en Aragón y zonas limítrofes mediante la integración de las tecnologías más avanzadas en telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact 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
18Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5032 contacts →

Exact match

“Silbö es la nueva telco que solo te contará cosas que suenan bien.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact 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
20Exact matchLas Rozas De Madrid, SpainHQ recorded Nov 6, 202651-20028 contacts →

Exact match

“7Play es un operador de telecomunicaciones con alcance nacional, que nace de la mano de un experimentado equipo con una larga trayectoria en el sector telco y en la consolidación…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact 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
22Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5023 contacts →

Exact match

“En Connectivity ofrecemos servicios de conectividad personalizados para empresas que quieren ofrecer servicios de telefonía e internet con su propia marca y para empresas que…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20022 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 · Nov 6, 2026 · View company records in RevenueBase
24Exact matchValencia, SpainHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Comercializando bajo el nombre de REDI, IBÉRICA DE REDES es un operador TOTAL de comunicaciones de voz y datos, integramos y proporcionamos todas las modalidades de conectividad…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchGranada, SpainHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Bienvenidos a Radiokable, un operador granadino que presta servicios de Internet, Fijo y Móvil.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 246 fiber optic service providers based in Spain

See the full list, filter by size, metro and specialty, and access 529 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fiber optic service providers based in Spain at a glance

As of Nov 6, 2026
6.8%Verified-email coverage
31.5Average contacts per company
11-50Median size (employees)
8.5%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
102
11-50
89
51-200
34
201-500
7
501-1,000
3
1,001-5,000
3
10001+
2

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 246 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 optic service providers” 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 529 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 optic service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fiber optic service providers are there based in Spain?

RevenueBase identified 246 company matches for fiber optic service providers 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?

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

Which city has the most fiber optic service providers?

Madrid leads with 21 company records, followed by Murcia (8) and Barcelona (7).

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 529 professional contacts with verified work emails tracked across these 246 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.