Company lists · Data refreshed September 2026

Top 25 Telecommunications facility builders based in Spain

Name: Telecommunications facility builders based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 148 companies tracked

RevenueBase identified 148 telecommunications facility builders headquartered in Spain as of September 2026 and tracks 2,862 professional contacts across them, including 161 with verified work emails. Madrid is the largest hub.

This list covers telecommunications facility builders 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 19, 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 19, 2026 86% judged on-target in blind review

148Companies

2,862Contacts tracked

161Verified emails

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The 25 largest telecommunications facility builders based in Spain

Ranked by team size

Top 25 of 148 telecommunications facility builders based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications facility builders: 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	OFG	Partial evidence	Córdoba, SpainHQ checked Sep 19, 2026	1,001-5,000	701 contacts →
	Partial evidence “OFG is an international company with more than 20 years of experience in the telecommunications sector.” Source: RevenueBase Database · checked Sep 19, 2026
2	Comfica Soluciones Integrales S.L	Indirect evidence	Fuenlabrada, SpainHQ checked Sep 19, 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 19, 2026
3	Smartel España	Indirect evidence	Erandio, SpainHQ checked Sep 19, 2026	51-200	110 contacts →
	Indirect evidence “Smart Telecom Consulting, empresa de ingeniería especializada en el campo de la telefonia móvil ofreciendo soluciones integrales a nuestros clientes desde el año 2004.” Source: RevenueBase Database · checked Sep 19, 2026
4	Cableven	Indirect evidence	Málaga, SpainHQ checked Sep 19, 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 19, 2026
5	TOWER	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “Apostando por la innovación y soñando con el desarrollo de una consolidada red de Telecomunicaciones en España, nace Tower Consultores en 1996.” Source: RevenueBase Database · checked Sep 19, 2026
6	Mattelco	Indirect evidence	Sabadell, SpainHQ checked Sep 19, 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 19, 2026
7	TDI Sistemas S.L	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “TDI Sistemas es una compañía de capital privado íntegramente español.” Source: RevenueBase Database · checked Sep 19, 2026
8	Autronic Comunicaciones	Indirect evidence	Sevilla, SpainHQ checked Sep 19, 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 19, 2026
9	Aryse Global Services	Indirect evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
10	CGM Telecomunicaciones	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “CGM Telecomunicaciones, fundada en 1993, es una empresa de ingeniería versátil enfocada al desarrollo de servicios de valor añadido que cubran las necesidades de los clientes, a…” Source: RevenueBase Database · checked Sep 19, 2026
11	ISC	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	24 contacts →
	Indirect evidence “Conectamos tus proyectos.” Source: RevenueBase Database · checked Sep 19, 2026
12	Ogisa Infraestructuras S.A	Indirect evidence	Zaragoza, SpainHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
13	IPT Grupo Comsa Corporación	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	19 contacts →
	Indirect evidence “Instalaciones y Proyectos integrales de Telecomunicaciones (IPT) es una empresa de COMSA Corporación especializada en servicios de planificación, ingeniería, despliegue, operación…” Source: RevenueBase Database · checked Sep 19, 2026
14	Altel Comunicaciones SLU	Indirect evidence	Vitoria-gasteiz, SpainHQ checked Sep 19, 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 19, 2026
15	Emser Innova	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	13 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
16	Cobitratel	Indirect evidence	Guadalajara, SpainHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Cobitratel es una empresa con más de 20 años de experiencia en el área de las telecomunicaciones, especializándose en cableado estructurado, diseño de redes y centralitas de voz…” Source: RevenueBase Database · checked Sep 19, 2026
17	Celling 5g	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “Exclusive” network sites.” Source: RevenueBase Database · checked Sep 19, 2026
18	Digatel Telecomunicaciones	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
19	KYO Electric	Indirect evidence	Villadangos Del Páramo, SpainHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Kyo Electric es una empresa dedicada al diseño, fabricación, distribución y alquiler de equipos especializados para empresas instaladoras de telecomunicaciones y operadoras de…” Source: RevenueBase Database · checked Sep 19, 2026
20	Asintel, S.L	Partial evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “AsINTEL, was created in 1988 as a telecommunications consulting and engineering, to provide these services to FECSA - ENDESA and GAS NATURAL.” Source: RevenueBase Database · checked Sep 19, 2026
21	Einesa Cable SL	Indirect evidence	Lleida, SpainHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
22	Teleco Infraestructuras	Indirect evidence	La Roda De Andalucía, SpainHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Teleco Infraestructuras es una empresa que realiza trabajos entre otros, de sistemas de telecomunicaciones que sirven de soporte al transporte mediante microzanja para llegar a…” Source: RevenueBase Database · checked Sep 19, 2026
23	Zargotel	Indirect evidence	Valencia, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “ZARGOTEL es una empresa formada por un grupo de profesionales con el objetivo de dar servicios y soluciones en el entorno de la ingeniería de las telecomunicaciones.” Source: RevenueBase Database · checked Sep 19, 2026
24	Situate	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Somos una empresa especializada en servicios de consultoría, ingeniería y diseño de redes.” Source: RevenueBase Database · checked Sep 19, 2026
25	Góriz Telecomunicaciones	Indirect evidence	Huesca, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 19, 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: telecommunications facility builders. 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 telecommunications facility builders.
Partial evidence: Its own public description names part of telecommunications facility builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications facility builders. 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 148 telecommunications facility builders based in Spain

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Telecommunications facility builders based in Spain at a glance

As of Sep 19, 2026

5.6%Verified-email coverage

19.3Average contacts per company

11-50Median size (employees)

18.9%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 148 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 telecommunications facility builders, 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 “telecommunications facility builders”. 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 telecommunications facility builders), 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 telecommunications facility builders, 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, 161 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 19, 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.

Telecommunications facility builders by metro

Telecommunications facility builders in Madrid28

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 telecommunications facility builders, 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 telecommunications facility builders are there based in Spain?

RevenueBase identified 148 telecommunications facility builders 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?

OFG, headquartered in Cordoba, tops this list with the largest team on record.

Which city has the most telecommunications facility builders?

Madrid leads with 28 headquartered companies, followed by Barcelona (5) and Murcia (5).

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 161 verified decision-maker contacts tracked across these 148 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 19, 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.