Company lists · Data refreshed September 2026

Top 25 Fiber optic installation companies based in Spain

Name: Fiber optic installation companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 287 companies tracked

RevenueBase identified 287 fiber optic installation companies headquartered in Spain as of September 2026 and tracks 3,738 professional contacts across them, including 328 with verified work emails. Madrid is the largest hub.

This list covers fiber optic installation companies headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review

287Companies

3,738Contacts tracked

328Verified emails

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The 25 largest fiber optic installation companies based in Spain

Ranked by team size

Top 25 of 287 fiber optic installation companies based in Spain, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to fiber optic installation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Comfica Soluciones Integrales S.L	Indirect evidence	Fuenlabrada, SpainHQ checked Sep 15, 2026	201-500	684 contacts →
	Indirect evidence “Empresa especializada en la ingenieria, desarrollo, construccion, instalación, y puesta en marcha de instalaciones de telecomunicaciones, electricidad, señalización, redes de…” Source: RevenueBase Database · checked Sep 15, 2026
2	Adamo Telecom Iberia S.A.U	Indirect evidence	Barcelona, SpainHQ checked Sep 15, 2026	51-200	298 contacts →
	Indirect evidence “Adamo is a telecom operator with Swedish origin operating in Spain since 2007.” Source: RevenueBase Database · checked Sep 15, 2026
3	Telxius	Indirect evidence	Madrid, SpainHQ checked Sep 15, 2026	201-500	294 contacts →
	Indirect evidence “As the world’s needs for uninterrupted global interconnectivity continue to rise, we are preparing the road ahead.” Source: RevenueBase Database · checked Sep 15, 2026
4	Inet Smart ITC	Indirect evidence	Cornellà De Llobregat, SpainHQ checked Sep 15, 2026	201-500	139 contacts →
	Indirect evidence “Inet es una empresa del grupo AXIS CORPORATE especializada en procesos de despliegue y mantenimiento de infraestructuras tecnológicas y comunicaciones para empresas.” Source: RevenueBase Database · checked Sep 15, 2026
5	Cableworld	Indirect evidence	Alicante, SpainHQ checked Sep 15, 2026	201-500	132 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026
6	Instelca	Indirect evidence	Málaga, SpainHQ checked Sep 15, 2026	201-500	118 contacts →
	Indirect evidence “El Grupo INSTELCA es proveedor global de servicios de Telecomunicaciones, Redes e Informática con más de 30 años de experiencia y con una clara orientación al clientes que nos ha…” Source: RevenueBase Database · checked Sep 15, 2026
7	Cableven	Indirect evidence	Málaga, SpainHQ checked Sep 15, 2026	501-1,000	103 contacts →
	Indirect evidence “Empresa cualificada y especializada en la instalación y mantenimiento de redes y equipos de telecomunicaciones.” Source: RevenueBase Database · checked Sep 15, 2026
8	Cablescom	Indirect evidence	Zaragoza, SpainHQ checked Sep 15, 2026	201-500	92 contacts →
	Indirect evidence “Cablescom es una de las principales compañías europeas dedicadas al diseño, fabricación y comercialización de cables de telecomunicaciones, señalización y fibra óptica.” Source: RevenueBase Database · checked Sep 15, 2026
9	Coyser SA	Indirect evidence	Madrid, SpainHQ checked Sep 15, 2026	51-200	88 contacts →
	Indirect evidence “Coyser S.A.” Source: RevenueBase Database · checked Sep 15, 2026
10	Gotor Comunicaciones	Indirect evidence	Zaragoza, SpainHQ checked Sep 15, 2026	51-200	45 contacts →
	Indirect evidence “Ingeniería, Consultoría e Instalación de Telecomunicaciones Trabajamos a nivel local, regional y nacional tanto para pequeñas y medianas empresas como para grandes organizaciones.” Source: RevenueBase Database · checked Sep 15, 2026
11	Optral S.A	Partial evidence	Alcobendas, SpainHQ checked Sep 15, 2026	51-200	40 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026
12	Mattelco	Indirect evidence	Sabadell, SpainHQ checked Sep 15, 2026	51-200	37 contacts →
	Indirect evidence “Confiamos en que nuestros valores y filosofía nos van a llevar muy lejos.” Source: RevenueBase Database · checked Sep 15, 2026
13	TDI Sistemas S.L	Indirect evidence	Madrid, SpainHQ checked Sep 15, 2026	51-200	37 contacts →
	Indirect evidence “TDI Sistemas es una compañía de capital privado íntegramente español.” Source: RevenueBase Database · checked Sep 15, 2026
14	Modi SL	Indirect evidence	Montcada I Reixac, SpainHQ checked Sep 15, 2026	11-50	37 contacts →
	Indirect evidence “MODI, S.L (Mantenimiento y Operación de Infraestructuras, S.L), está formada por un grupo profesional con más de 25 años de experiencia en el diseño y construcción de redes de…” Source: RevenueBase Database · checked Sep 15, 2026
15	Autronic Comunicaciones	Indirect evidence	Sevilla, SpainHQ checked Sep 15, 2026	51-200	34 contacts →
	Indirect evidence “EMPRESA Ofrecemos a nuestros clientes un servicio global de ingeniería de sistemas integrales, especializados en proyectos llave en mano y desarrollados con el máximo compromiso…” Source: RevenueBase Database · checked Sep 15, 2026
16	Aryse Global Services	Indirect evidence	Madrid, SpainHQ checked Sep 15, 2026	51-200	32 contacts →
	Indirect evidence “Aryse Infraestructuras está formada por un equipo técnico muy cualificado, desarrollando desde Ingeniería, Diseño, Implantaciones y Mantenimiento.” Source: RevenueBase Database · checked Sep 15, 2026
17	Onivia	Indirect evidence	Pozuelo De Alarcón, SpainHQ checked Sep 15, 2026	11-50	30 contacts →
	Indirect evidence “Onivia es el operador mayorista de fibra óptica independiente y neutral, que está transformando el mercado de las telecomunicaciones en España.” Source: RevenueBase Database · checked Sep 15, 2026
18	Zertia Telecomunicaciones S.L	Indirect evidence	Alcobendas, SpainHQ checked Sep 15, 2026	51-200	29 contacts →
	Indirect evidence “Zertia Telecomunicaciones es un proveedor global de Servicios Gestionados de Telecomunicaciones para empresas, que ofrece soluciones y proyectos a medida, encargándose de la…” Source: RevenueBase Database · checked Sep 15, 2026
19	Apfutura	Indirect evidence	Sant Just Desvern, SpainHQ checked Sep 15, 2026	11-50	29 contacts →
	Indirect evidence “At APFutura we are dedicated to delivering end-to-end telecommunications solutions to our customers.” Source: RevenueBase Database · checked Sep 15, 2026
20	Vimantik Soluciones Tecnológicas	Indirect evidence	Madrid, SpainHQ checked Sep 15, 2026	11-50	29 contacts →
	Indirect evidence “Somos una compañía especializada en servicios de Telecomunicaciones y Sistemas con mas de 20 años de experiencia prestando servicios a organizaciones públicas y privadas.” Source: RevenueBase Database · checked Sep 15, 2026
21	ISC	Indirect evidence	Barcelona, SpainHQ checked Sep 15, 2026	51-200	24 contacts →
	Indirect evidence “Conectamos tus proyectos.” Source: RevenueBase Database · checked Sep 15, 2026
22	Keynet Systems	Indirect evidence	Zaragoza, SpainHQ checked Sep 15, 2026	11-50	21 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026
23	Fibercom SL	Indirect evidence	Zaragoza, SpainHQ checked Sep 15, 2026	11-50	17 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026
24	PC Mancha	Indirect evidence	Quintanar De La Orden, SpainHQ checked Sep 15, 2026	11-50	17 contacts →
	Indirect evidence “PC Mancha es un operador local de telecomunicaciones y servicios tecnológicos que ofrece soluciones de conectividad, comunicaciones, seguridad y soporte informático para empresas…” Source: RevenueBase Database · checked Sep 15, 2026
25	Altel Comunicaciones SLU	Indirect evidence	Vitoria-gasteiz, SpainHQ checked Sep 15, 2026	51-200	17 contacts →
	Indirect evidence “La historia de ALTEL comienza en el año 1989, con el inicio de actividad de instalación y mantenimiento de equipos de radio y televisión.” Source: RevenueBase Database · checked Sep 15, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: fiber optic installation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names fiber optic installation companies.
Partial evidence: Its own public description names part of fiber optic installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiber optic installation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 287 fiber optic installation companies based in Spain

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Fiber optic installation companies based in Spain at a glance

As of Sep 15, 2026

8.8%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

15.7%Largest-city concentration · Madrid

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

121

11-50

120

51-200

201-500

501-1,000

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 287 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among fiber optic installation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “fiber optic installation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names fiber optic installation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among fiber optic installation companies, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 328 across the full list. 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 15, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Fiber optic installation companies by metro

Fiber optic installation companies in Madrid45

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names fiber optic installation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many fiber optic installation companies are there based in Spain?

RevenueBase identified 287 fiber optic installation companies headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Comfica Soluciones Integrales S.L, headquartered in Fuenlabrada, tops this list with the largest team on record.

Which city has the most fiber optic installation companies?

Madrid leads with 45 headquartered companies, followed by Barcelona (16) and Malaga (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 328 verified decision-maker contacts tracked across these 287 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 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 Smart Search, 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.