Company lists · Data refreshed September 2026

Top 25 Telecom maintenance service providers based in Spain

Name: Telecom maintenance service providers based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 228 companies tracked

RevenueBase identified 228 telecom maintenance service providers headquartered in Spain as of September 2026 and tracks 4,693 professional contacts across them, including 268 with verified work emails. Madrid is the largest hub.

This list covers telecom maintenance service providers 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

228Companies

4,693Contacts tracked

268Verified emails

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The 25 largest telecom maintenance service providers based in Spain

Ranked by team size

Top 25 of 228 telecom maintenance service providers 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 telecom maintenance service providers: 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	Circet España	Partial evidence	Sevilla, SpainHQ checked Sep 19, 2026	1,001-5,000	455 contacts →
	Partial evidence “Circet España, empresa líder del sector de las telecomunicaciones en España, con implantación a nivel Nacional.” Source: RevenueBase Database · checked Sep 19, 2026
3	Soltel Group	Indirect evidence	Sevilla, SpainHQ checked Sep 19, 2026	201-500	398 contacts →
	Indirect evidence “Consulta ofertas de trabajo en nuestro portal de empleo: http://empleo.soltel.es Soltel Group es una empresa especializada en la prestación de servicios de administración y…” Source: RevenueBase Database · checked Sep 19, 2026
4	Inet Smart ITC	Indirect evidence	Cornellà De Llobregat, SpainHQ checked Sep 19, 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 19, 2026
5	Instelca	Partial evidence	Málaga, SpainHQ checked Sep 19, 2026	201-500	118 contacts →
	Partial 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 19, 2026
6	Smartel España	Partial evidence	Erandio, SpainHQ checked Sep 19, 2026	51-200	110 contacts →
	Partial 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
7	Cableven	Partial evidence	Málaga, SpainHQ checked Sep 19, 2026	501-1,000	103 contacts →
	Partial evidence “Empresa cualificada y especializada en la instalación y mantenimiento de redes y equipos de telecomunicaciones.” Source: RevenueBase Database · checked Sep 19, 2026
8	Coyser SA	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “Coyser S.A.” Source: RevenueBase Database · checked Sep 19, 2026
9	Deltacomgroup	Partial evidence	San Sebastián De Los Reyes, SpainHQ checked Sep 19, 2026	201-500	81 contacts →
	Partial evidence “Your Network is Our Business DeltaComGroup is a global supplier of top quality telecommunications systems, components and services.” Source: RevenueBase Database · checked Sep 19, 2026
10	ATM España	Indirect evidence	Gijón, SpainHQ checked Sep 19, 2026	201-500	65 contacts →
	Indirect evidence “Asistencia Total en Mantenimiento España S.L.U.” Source: RevenueBase Database · checked Sep 19, 2026
11	ISP Grup	Partial evidence	Les Franqueses Del Vallés, SpainHQ checked Sep 19, 2026	201-500	50 contacts →
	Partial evidence “ISP Grup nació en con la visión de que las telecomunicaciones serían el futuro.” Source: RevenueBase Database · checked Sep 19, 2026
12	Gotor Comunicaciones	Partial evidence	Zaragoza, SpainHQ checked Sep 19, 2026	51-200	45 contacts →
	Partial 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 19, 2026
13	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
14	Ofimedia Reparaciones S.L	Indirect evidence	Getafe, SpainHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
15	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
16	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
17	Sercaman	Indirect evidence	Toledo, SpainHQ checked Sep 19, 2026	51-200	23 contacts →
	Indirect evidence “Adaptamos la tecnología más actualizada a cada necesidad de una manera personalizada.” Source: RevenueBase Database · checked Sep 19, 2026
18	Phicus Tecnología	Partial evidence	Murcia, SpainHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “En Phicus Tecnología llevamos más de 20 años ayudando a operadores de telecomunicaciones (ISP) a mejorar el control, la visibilidad y la eficiencia en la gestión de sus redes.” Source: RevenueBase Database · checked Sep 19, 2026
19	Unique Telecomunicaciones	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Te imaginas no tener que preocuparte nunca más por la gestión de la factura de telefonía de tu empresa?” Source: RevenueBase Database · checked Sep 19, 2026
20	IPT Grupo Comsa Corporación	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	19 contacts →
	Partial 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
21	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
22	Cloud Comunicaciones	Partial evidence	Cerdanyola Del Valles, SpainHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Cloud Comunicaciones, es una empresa de telecomunicaciones con más de 30 años de experiencia enfocada a prestar servicios y soluciones a otras empresas.” Source: RevenueBase Database · checked Sep 19, 2026
23	Digatel Telecomunicaciones	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial 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
24	TEL Iberica SA	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	10 contacts →
	Partial evidence “Tel Telecomunicaciones es una de las empresas más importantes y cualificadas para prestar servicios en el campo de las telecomunicaciones.” Source: RevenueBase Database · checked Sep 19, 2026
25	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

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: telecom maintenance service providers. 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 telecom maintenance service providers.
Partial evidence: Its own public description names part of telecom maintenance service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom maintenance service providers. 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 228 telecom maintenance service providers based in Spain

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Telecom maintenance service providers based in Spain at a glance

As of Sep 19, 2026

5.7%Verified-email coverage

20.6Average contacts per company

11-50Median size (employees)

18.0%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

107

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 228 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 telecom maintenance service providers, 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 “telecom maintenance service providers”. 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 telecom maintenance service providers), 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 telecom maintenance service providers, 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, 268 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.

Telecom maintenance service providers by metro

Telecom maintenance service providers in Madrid41

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 telecom maintenance service providers, 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 telecom maintenance service providers are there based in Spain?

RevenueBase identified 228 telecom maintenance service providers 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 telecom maintenance service providers?

Madrid leads with 41 headquartered companies, followed by Malaga (10) and Barcelona (7).

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 268 verified decision-maker contacts tracked across these 228 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.