Company lists · Data refreshed September 2026
Top 25 Telecommunications systems integration companies based in Spain
RevenueBase identified 810 telecommunications systems integration companies headquartered in Spain as of September 2026 and tracks 14,913 professional contacts across them, including 1,172 with verified work emails. Madrid is the largest hub.
This list covers telecommunications systems integration 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 29, 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.
The 25 largest telecommunications systems integration companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,744 contacts → | ||||
Indirect evidence “Siadde Soluciones es una compañía tecnológica, innovadora y competitiva en un contexto global.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,125 contacts → | ||||
Indirect evidence “En Zelenza somos líderes en servicios integrados TIC, Ingeniería de Redes Telco, Defensa y Seguridad y Customer Experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 739 contacts → | ||||
Indirect evidence “NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 628 contacts → | ||||
Indirect evidence “Insyte Instalaciones inicia su actividad en 1990 como empresa instaladora en el sector eléctrico y de telecomunicaciones.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 547 contacts → | ||||
Indirect evidence “Logicalis es una compañía de referencia tanto en España como en los países en los que opera.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 320 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 150 contacts → | ||||
Indirect evidence “Somos una marca global de Ingeniería en integración de soluciones de Telecomunicaciones y Sistemas IT con más de 35 años de experiencia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 126 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 110 contacts → | ||||
Indirect evidence “Órbita Ingeniería es una empresa dedicada al diseño, fabricación y puesta en marcha de soluciones tecnológicas que mejoran los procesos operativos de nuestros clientes, aumentando…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 107 contacts → | ||||
Indirect evidence “VITELSA has 30 years experience in the design and implementation of advanced solutions and services in audiovisual, security and communication technologies for the Audiovisual…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 106 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 103 contacts → | ||||
Indirect evidence “Empresa cualificada y especializada en la instalación y mantenimiento de redes y equipos de telecomunicaciones.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 93 contacts → | ||||
Partial evidence “mdtel is a manufacturer and integrator of corporate telecommunications solutions for business environments with more than 20 years of experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 91 contacts → | ||||
Indirect evidence “Indigo Grup es una organización dedicada a la consultoría e intergración de soluciones TIC profesionales.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 82 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 82 contacts → | ||||
Indirect evidence “SORTIS: Líder en Soluciones Integrales de Telecomunicaciones y TI desde 2005.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 81 contacts → | ||||
Strong evidence “Your Network is Our Business DeltaComGroup is a global supplier of top quality telecommunications systems, components and services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 79 contacts → | ||||
Indirect evidence “We create technological solutions for the success of your business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 78 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 72 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 72 contacts → | ||||
Indirect evidence “Ruybesa offers customized solutions tailored to each client.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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 integration 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 telecommunications systems integration companies.
- Partial evidence
- Its own public description names part of telecommunications systems integration companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name telecommunications systems integration 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 810 telecommunications systems integration companies based in Spain
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,172 reachable decision-makers.
Free signup · no credit card
Telecommunications systems integration companies based in Spain at a glance
As of Sep 29, 2026Companies by employee count
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 810 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 systems integration 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 “telecommunications systems integration 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 telecommunications systems integration 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 telecommunications systems integration 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, 1,172 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 29, 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 integration companies by metro
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 integration 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 telecommunications systems integration companies are there based in Spain?
RevenueBase identified 810 telecommunications systems integration 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?
Ninguno, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most telecommunications systems integration companies?
Madrid leads with 159 headquartered companies, followed by Barcelona (58) and Malaga (21).
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 1,172 verified decision-maker contacts tracked across these 810 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 810 telecommunications systems integration companies based in Spain. Start with a free account, no credit card.
Download this list →Related lists
Telecommunications systems integration companies by geography
- Telecommunications systems integration companies based in Buenos Aires, Argentina
- Telecommunications systems integration companies based in Brisbane, Australia
- Telecommunications systems integration companies based in Melbourne, Australia
- Telecommunications systems integration companies based in Perth, Australia
- Telecommunications systems integration companies based in Sydney, Australia
- Telecommunications systems integration companies based in Barueri, Brazil
- Telecommunications systems integration companies based in Belo Horizonte, Brazil
- Telecommunications systems integration companies based in Campinas, Brazil
- Telecommunications systems integration companies based in Curitiba, Brazil
- Telecommunications systems integration companies based in Porto Alegre, Brazil
- Telecommunications systems integration companies based in Rio De Janeiro, Brazil
- Telecommunications systems integration companies based in Sao Paulo, Brazil
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Telecommunications systems integration companies based in Buenos Aires, Argentina
- Telecommunications systems integration companies based in Brisbane, Australia
- Telecommunications systems integration companies based in Melbourne, Australia
- Telecommunications systems integration companies based in Perth, Australia
- Telecommunications systems integration companies based in Sydney, Australia
- Telecommunications systems integration companies based in Barueri, Brazil