Company lists · Data refreshed September 2026

Top 25 Telecommunications systems integrators based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 559 companies tracked

RevenueBase identified 559 telecommunications systems integrators headquartered in Spain as of September 2026 and tracks 8,514 professional contacts across them, including 746 with verified work emails and 82 with mobile numbers. Madrid is the largest hub.

This list covers telecommunications systems integrators 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 6, 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 6, 2026 86% judged on-target in blind review

559Companies

8,514Contacts tracked

746Verified emails

82Mobile numbers

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The 25 largest telecommunications systems integrators based in Spain

Ranked by team size

Top 25 of 559 telecommunications systems integrators based in Spain, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications systems integrators: 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	Nunsys	Indirect evidence	Paterna, SpainHQ checked Sep 6, 2026	1,001-5,000	739 contacts →
	“NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.” Source: company website · checked Sep 6, 2026
2	Comfica Soluciones Integrales S.L	Indirect evidence	Fuenlabrada, SpainHQ checked Sep 6, 2026	201-500	684 contacts →
	“Empresa especializada en la ingenieria, desarrollo, construccion, instalación, y puesta en marcha de instalaciones de telecomunicaciones, electricidad, señalización, redes de…” Source: company website · checked Sep 6, 2026
3	Logicalis Spain	Indirect evidence	Barcelona, SpainHQ checked Sep 6, 2026	501-1,000	547 contacts →
	“Logicalis es una compañía de referencia tanto en España como en los países en los que opera.” Source: company website · checked Sep 6, 2026
4	Sistem	Indirect evidence	Getafe, SpainHQ checked Sep 6, 2026	501-1,000	320 contacts →
	“Perteneciente al Grupo CPS, somos una empresa integradora de sistemas con vocación internacional que ofrece a sus clientes soluciones globales, en los mercados del Transporte…” Source: company website · checked Sep 6, 2026
5	Powernet	Indirect evidence	Madrid, SpainHQ checked Sep 6, 2026	51-200	150 contacts →
	“Somos una marca global de Ingeniería en integración de soluciones de Telecomunicaciones y Sistemas IT con más de 35 años de experiencia.” Source: company website · checked Sep 6, 2026
6	Ambar Telecomunicaciones	Indirect evidence	Santander, SpainHQ checked Sep 6, 2026	201-500	126 contacts →
	“Ámbar Telecomunicaciones es una empresa de ingeniería especializada en la integración global de sistemas de comunicación, que centra su actividad en el diseño, instalación y…” Source: company website · checked Sep 6, 2026
7	Instelca	Indirect evidence	Málaga, SpainHQ checked Sep 6, 2026	201-500	118 contacts →
	“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: company website · checked Sep 6, 2026
8	Einzelnet	Indirect evidence	Madrid, SpainHQ checked Sep 6, 2026	51-200	106 contacts →
	“EinzelNet es parte del ecosistema de Unikal, un especialista de especialistas con un extenso porfolio de servicios diseñado para de responder a las necesidades tecnológicas de…” Source: company website · checked Sep 6, 2026
9	MDTEL	Strong evidence	Madrid, SpainHQ checked Sep 6, 2026	51-200	93 contacts →
	“mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Source: company website · checked Sep 6, 2026
10	Indigo Grup	Indirect evidence	El Prat De Llobregat, SpainHQ checked Sep 6, 2026	11-50	91 contacts →
	“Indigo Grup es una organización dedicada a la consultoría e intergración de soluciones TIC profesionales.” Source: company website · checked Sep 6, 2026
11	Sarenet	Indirect evidence	Zamudio, SpainHQ checked Sep 6, 2026	51-200	90 contacts →
	“Sarenet es el proveedor de voz y datos con más experiencia de cuantos hoy operan en España.” Source: company website · checked Sep 6, 2026
12	ITM Global	Indirect evidence	Cartes, SpainHQ checked Sep 6, 2026	201-500	82 contacts →
	“ITM Global es una empresa dedicada al mundo de las nuevas tecnologías, seguridad y las telecomunicaciones, abarcando una gran cantidad de campos de trabajo en estas materias y…” Source: company website · checked Sep 6, 2026
13	Sortis	Indirect evidence	Madrid, SpainHQ checked Sep 6, 2026	51-200	82 contacts →
	“SORTIS: Líder en Soluciones Integrales de Telecomunicaciones y TI desde 2005.” Source: company website · checked Sep 6, 2026
14	Deltacomgroup	Strong evidence	San Sebastián De Los Reyes, SpainHQ checked Sep 6, 2026	201-500	81 contacts →
	“Your Network is Our Business DeltaComGroup is a global supplier of top quality telecommunications systems, components and services.” Source: company website · checked Sep 6, 2026
15	CIE Tecnologías	Indirect evidence	Arteixo, SpainHQ checked Sep 6, 2026	51-200	78 contacts →
	“CIE Tecnologías, es hoy una empresa establecida en el sector de las telecomunicaciones y desarrolla su actividad centrándose en el diseño e implementación de tecnologías e…” Source: company website · checked Sep 6, 2026
16	B2com	Indirect evidence	Madrid, SpainHQ checked Sep 6, 2026	51-200	72 contacts →
	“Premium Numbers, operador de telecomunicaciones inscrito en la CMT y con numeración propia, fue fundada en el año 2.001, siendo una de las empresas del sector de la telefonía de…” Source: company website · checked Sep 6, 2026
17	Datatronics	Strong evidence	Madrid, SpainHQ checked Sep 6, 2026	11-50	63 contacts →
	“Datatronics is a seasoned Telco System Integrator with over thirty years of experience supporting communication service providers, from small operators and MVNOs to large…” Source: company website · checked Sep 6, 2026
18	Unitecnic	Indirect evidence	Barcelona, SpainHQ checked Sep 6, 2026	51-200	61 contacts →
	“UNITECNIC es una ingeniería broadcast, audiovisual y de entorno médico perteneciente a GRUP MEDIAPRO.” Source: company website · checked Sep 6, 2026
19	Velorcios Group	Indirect evidence	SpainHQ checked Sep 6, 2026	51-200	59 contacts →
	“Dell Prefered Partner, principal partner de Dell en Canarias Soluciones Globales Proyectos Llave en mano, soluciones end to end.” Source: company website · checked Sep 6, 2026
20	Radiotrans	Indirect evidence	Leganes, SpainHQ checked Sep 6, 2026	51-200	57 contacts →
	“RADIOTRANS es una compañía privada transnacional dedicada a la ingeniería, comercialización, suministro, instalación y puesta en marcha y servicio postventa de equipos y sistemas…” Source: company website · checked Sep 6, 2026
21	Makenai Solutions, Innovation & Creative Ideas	Indirect evidence	Madrid, SpainHQ checked Sep 6, 2026	11-50	57 contacts →
	“Transformamos lo complejo en soluciones tecnológicas simples y eficaces.” Source: company website · checked Sep 6, 2026
22	Soditel	Indirect evidence	Madrid, SpainHQ checked Sep 6, 2026	11-50	55 contacts →
	“SODITEL NUEVO PARTNER TECNOLÓGICO DE AASTRA EN ESPAÑA El gran nivel profesional y su avalada y reconocida garantía en la prestación de servicios profesionales, han convertido a…” Source: company website · checked Sep 6, 2026
23	Grupo Micro BR Comunicaciones	Indirect evidence	Barcelona, SpainHQ checked Sep 6, 2026	11-50	52 contacts →
	“Micro BR, fundada en 1987 por profesionales del ámbito del Networking, es la empresa nacional especializada en soluciones de comunicaciones y seguridad IT para el sector…” Source: company website · checked Sep 6, 2026
24	Solutel	Indirect evidence	Valencia, SpainHQ checked Sep 6, 2026	11-50	47 contacts →
	“At Solutel, we help companies connect and protect their most valuable asset: information.” Source: company website · checked Sep 6, 2026
25	Instel	Indirect evidence	Barcelona, SpainHQ checked Sep 6, 2026	11-50	46 contacts →
	“Más de 50 años liderando la transformación digital Somos una empresa de servicios del sector de las telecomunicaciones, con un origen familiar, especialistas en la integración de…” Source: company website · checked Sep 6, 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 systems integrators. 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 systems integrators.
Partial evidence: Its own public description names part of telecommunications systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications systems integrators. 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 559 telecommunications systems integrators based in Spain

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Telecommunications systems integrators based in Spain at a glance

As of Sep 6, 2026

8.8%Verified-email coverage

1.0%Mobile-number coverage

15.2Average contacts per company

11-50Median size (employees)

18.1%Largest-city concentration · Madrid

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

260

11-50

224

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

6990–30

4331–60

061–90

090–180

4180+

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 systems integrators, 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 systems integrators”. 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 systems integrators), 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 systems integrators, 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, 746 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 6, 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 systems integrators by metro

Telecommunications systems integrators in Madrid101
Telecommunications systems integrators in Barcelona43

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 systems integrators, 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 systems integrators are there based in Spain?

RevenueBase identified 559 telecommunications systems integrators 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?

Nunsys, headquartered in Paterna, tops this list with the largest team on record.

Which city has the most telecommunications systems integrators?

Madrid leads with 101 headquartered companies, followed by Barcelona (43) and Malaga (15).

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 746 verified decision-maker contacts tracked across these 559 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 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 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.