Company lists · Data refreshed November 2026

Top 25 Data communications contractors based in Spain

RevenueBase identified 449 company matches for data communications contractors associated with Spain as of November 2026 and tracks 7,484 professional contacts across them, including 838 with verified work emails. Madrid is the largest hub.

This list covers company matches for data communications contractors associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
449Companies
7,484Contacts tracked
838Verified emails
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The 25 largest data communications contractors based in Spain

Ranked by team size
Top 25 of 449 company matches for data communications contractors based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPaterna, SpainHQ recorded Nov 6, 20261,001-5,000810 contacts →

Exact match

“NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCórdoba, SpainHQ recorded Nov 6, 20261,001-5,000760 contacts →

Exact match

“OFG is an international company with more than 20 years of experience in the telecommunications sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchFuenlabrada, SpainHQ recorded Nov 6, 2026201-500755 contacts →

Exact match

“Empresa especializada en la ingenieria, desarrollo, construccion, instalación, y puesta en marcha de instalaciones de telecomunicaciones, electricidad, señalización, redes de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGetafe, SpainHQ recorded Nov 6, 20261,001-5,000707 contacts →

Exact match

“Insyte Instalaciones inicia su actividad en 1990 como empresa instaladora en el sector eléctrico y de telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Nov 6, 202651-200166 contacts →

Exact match

“Somos una marca global de Ingeniería en integración de soluciones de Telecomunicaciones y Sistemas IT con más de 35 años de experiencia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchCornellà De Llobregat, SpainHQ recorded Nov 6, 2026201-500150 contacts →

Exact match

“Inet es una empresa del grupo AXIS CORPORATE especializada en procesos de despliegue y mantenimiento de infraestructuras tecnológicas y comunicaciones para empresas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMálaga, SpainHQ recorded Nov 6, 2026201-500145 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSantander, SpainHQ recorded Nov 6, 2026201-500133 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMálaga, SpainHQ recorded Nov 6, 2026501-1,000123 contacts →

Exact match

“Empresa cualificada y especializada en la instalación y mantenimiento de redes y equipos de telecomunicaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Coyser S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchEl Palmar (murcia), SpainHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“Emurtel es una compañía líder de ingeniería y consultoría multidisciplinar orientada a la gestión integral de proyectos, ofreciendo soluciones de valor añadido en el diseño…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAviles, SpainHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“Electroinnova instalaciones y mantenimientos S.L es una empresa asturiana con una clara voación de expansión internacional que nace con el objetivo de ofrecer y solucionar…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchEl Prat De Llobregat, SpainHQ recorded Nov 6, 202611-5095 contacts →

Exact match

“Indigo Grup es una organización dedicada a la consultoría e intergración de soluciones TIC profesionales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPaterna, SpainHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“GENERA Q es una empresa especializada en el diseño, ejecución y mantenimiento de instalaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Construcía Instalaciones, expertos en instalaciones de Ingeniería desde el año 2002, gestionamos proyectos integrales de diseño e implementación de todas las infraestructuras…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5068 contacts →

Exact match

“Transformamos lo complejo en soluciones tecnológicas simples y eficaces.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchValencia, SpainHQ recorded Nov 6, 202611-5053 contacts →

Exact match

“At Solutel, we help companies connect and protect their most valuable asset: information.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSabadell, SpainHQ recorded Nov 6, 202651-20051 contacts →

Exact match

“Confiamos en que nuestros valores y filosofía nos van a llevar muy lejos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchZaragoza, SpainHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Ingeniería, Consultoría e Instalación de Telecomunicaciones Trabajamos a nivel local, regional y nacional tanto para pequeñas y medianas empresas como para grandes organizaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSan Sebastíán, SpainHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“Ikusi provee unas redes de comunicaciones eficientes y robustas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMadrid, SpainHQ recorded Nov 6, 2026501-1,00041 contacts →

Exact match

“Actualmente Axians España”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“TDI Sistemas es una compañía de capital privado íntegramente español.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Grupo Conector S.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchVigo, SpainHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchMontcada I Reixac, SpainHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Inserty es referente en el sector de las instalaciones de comunicaciones y eléctricas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 449 data communications contractors based in Spain

See the full list, filter by size, metro and specialty, and access 838 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Data communications contractors based in Spain at a glance

As of Nov 6, 2026
11.2%Verified-email coverage
16.7Average contacts per company
11-50Median size (employees)
17.8%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
196
11-50
178
51-200
47
201-500
11
501-1,000
2
1,001-5,000
4

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 449 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “data communications contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 838 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “data communications contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many data communications contractors are there based in Spain?

RevenueBase identified 449 company matches for data communications contractors associated with Spain as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Nunsys tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most data communications contractors?

Madrid leads with 80 company records, followed by Barcelona (34) and Malaga (12).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 838 professional contacts with verified work emails tracked across these 449 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 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 SmartSearch, 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.