Company lists · Data refreshed September 2026

Top 25 Telecom transformation consultants based in Spain

Name: Telecom transformation consultants based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 671 companies tracked

RevenueBase identified 671 telecom transformation consultants headquartered in Spain as of September 2026 and tracks 19,206 professional contacts across them, including 2,342 with verified work emails. Madrid is the largest hub.

This list covers telecom transformation consultants 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

671Companies

19,206Contacts tracked

2,342Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest telecom transformation consultants based in Spain

Ranked by team size

Top 25 of 671 telecom transformation consultants 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 transformation consultants: 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 19, 2026	1,001-5,000	739 contacts →
	Indirect evidence “NUNSYS es una empresa especializada en la Implantación de Soluciones Integrales de Tecnología.” Source: RevenueBase Database · checked Sep 19, 2026
2	NAE	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	501-1,000	503 contacts →
	Partial evidence “Nae is an international consulting firm specialized in the telecom sector, providing deal & strategy, business, and technology advisory services.” Source: RevenueBase Database · checked Sep 19, 2026
3	SIRT	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	201-500	449 contacts →
	Indirect evidence “Experiencia, especialización y calidad de servicio son los tres valores clave en los que SIRT basa su actividad y la relación con sus clientes.” Source: RevenueBase Database · checked Sep 19, 2026
4	Integra	Indirect evidence	Zaragoza, SpainHQ checked Sep 19, 2026	501-1,000	375 contacts →
	Indirect evidence “We are a technology consulting company, formed by different benchmark brands, which creates, through specialization in areas and technological and strategic divisions, an…” Source: RevenueBase Database · checked Sep 19, 2026
5	Excelia	Indirect evidence	Pozuelo De Alarcón, SpainHQ checked Sep 19, 2026	201-500	317 contacts →
	Indirect evidence “We are a global consulting, technology, and professional services firm with over 25 years of experience.” Source: RevenueBase Database · checked Sep 19, 2026
6	Viseo Iberia	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	1,001-5,000	309 contacts →
	Partial evidence “VISEO is a global digital and business consulting company that assists its clients with their transformation journeys using advanced technology and industry expertise.” Source: RevenueBase Database · checked Sep 19, 2026
7	BIP Spain	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	5,001-10,000	292 contacts →
	Indirect evidence “BIP es una consultora internacional especializada, desde su fundación en 2003, en facilitar la transformación end-to-end de los negocios de sus clientes, donde “hacemos que las…” Source: RevenueBase Database · checked Sep 19, 2026
8	Timestamp España	Strong evidence	Pozuelo De Alarcón, SpainHQ checked Sep 19, 2026	1,001-5,000	284 contacts →
	Strong evidence “Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Source: RevenueBase Database · checked Sep 19, 2026
9	DISID	Partial evidence	Valencia, SpainHQ checked Sep 19, 2026	51-200	178 contacts →
	Partial evidence “DISID is a technology consulting company that carries out Digital Transformation projects following a model of technological partner, we help our clients with the latest…” Source: RevenueBase Database · checked Sep 19, 2026
10	Arbentia	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	171 contacts →
	Indirect evidence “En ARBENTIA somos una consultora especializada en tecnología que impulsa la transformación digital de las empresas.” Source: RevenueBase Database · checked Sep 19, 2026
11	Searchit	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	143 contacts →
	Indirect evidence “Search Information Technologies & Communication es una empresa innovadora y dinámica especializada en brindar soluciones tecnológicas avanzadas en el ámbito de las tecnologías de…” Source: RevenueBase Database · checked Sep 19, 2026
12	Quantion	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	140 contacts →
	Partial evidence “Quantion provides end-to-end technology and digital services, supporting organizations throughout their digital transformation journey, from strategic definition to technology…” Source: RevenueBase Database · checked Sep 19, 2026
13	Better Consultants	Strong evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	137 contacts →
	Strong evidence “Better Consultants is the strategic partner for innovation and digital transformation.” Source: RevenueBase Database · checked Sep 19, 2026
14	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
15	O2o	Strong evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	105 contacts →
	Strong evidence “In O2O we have a team specialized on digital business that offers a consultancy service on Digital Strategy and Digital Transformation, lining up the needs Business and IT have…” Source: RevenueBase Database · checked Sep 19, 2026
16	Rocasalvatella	Partial evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 19, 2026	51-200	100 contacts →
	Partial evidence “RocaSalvatella is a strategic consulting services specialised in the digital transformation of business.” Source: RevenueBase Database · checked Sep 19, 2026
17	EACOM	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	90 contacts →
	Indirect evidence “EACOM S.A.(Enginyers i Arquitectes, Consultors d'Obres i Muntatges S.A.) es una sociedad privada consultora de servicios y actividades de ingeniería, que nace con las obras…” Source: RevenueBase Database · checked Sep 19, 2026
18	Telecomunicación DE Levante SL	Partial evidence	Alicante, SpainHQ checked Sep 19, 2026	1,001-5,000	90 contacts →
	Partial evidence “Telecomunicación de Levante (Teleco) inició su actividad hace más de tres décadas con Telefónica como principal cliente.” Source: RevenueBase Database · checked Sep 19, 2026
19	BE Beyond	Indirect evidence	Mairena Del Aljarafe, SpainHQ checked Sep 19, 2026	51-200	90 contacts →
	Indirect evidence “Beyond Mobility es una consultora con amplia experiencia en proyectos de comunicaciones y tecnológicos.” Source: RevenueBase Database · checked Sep 19, 2026
20	TOWER	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	88 contacts →
	Partial 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
21	Prosol	Indirect evidence	Las Matas (las Rozas), SpainHQ checked Sep 19, 2026	51-200	72 contacts →
	Indirect evidence “PROSOL es una compañía IT que ayuda a las empresas a mejorar su arquitectura tecnológica y a estar a la última en la innovación digital, haciendo posible su proceso de…” Source: RevenueBase Database · checked Sep 19, 2026
22	Italtel Spain	Indirect evidence	Alcobendas, SpainHQ checked Sep 19, 2026	201-500	68 contacts →
	Indirect evidence “Somos un proveedor global de soluciones integrales en redes, cloud, aplicaciones, seguridad y consultoría.” Source: RevenueBase Database · checked Sep 19, 2026
23	Businessgo	Indirect evidence	Sevilla, SpainHQ checked Sep 19, 2026	51-200	62 contacts →
	Indirect evidence “Nos mueve la pasión por el trabajo bien hecho.” Source: RevenueBase Database · checked Sep 19, 2026
24	Fide Partners	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	51-200	59 contacts →
	Partial evidence “We are a boutique strategic and management consulting firm focused on the telecommunications, media and technology sectors (TMT).” Source: RevenueBase Database · checked Sep 19, 2026
25	Contecnow	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	51-200	59 contacts →
	Partial evidence “Contec Consulting es una consultoría independiente de telecomunicaciones, con capital 100 % nacional y creada en el año Damos soporte a nuestros clientes en los siguientes pilares…” 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 transformation consultants. 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 transformation consultants.
Partial evidence: Its own public description names part of telecom transformation consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom transformation consultants. 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 671 telecom transformation consultants based in Spain

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,342 reachable decision-makers.

Free signup · no credit card

View the full list →

Telecom transformation consultants based in Spain at a glance

As of Sep 19, 2026

12.2%Verified-email coverage

28.6Average contacts per company

1-10Median size (employees)

27.9%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

364

11-50

200

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 671 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 transformation consultants, 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 transformation consultants”. 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 transformation consultants), 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 transformation consultants, 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, 2,342 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 transformation consultants by metro

Telecom transformation consultants in Madrid187
Telecom transformation consultants in Barcelona82

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 transformation consultants, 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 transformation consultants are there based in Spain?

RevenueBase identified 671 telecom transformation consultants 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 telecom transformation consultants?

Madrid leads with 187 headquartered companies, followed by Barcelona (82) 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 2,342 verified decision-maker contacts tracked across these 671 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.

Ready to reach these companies? Verified emails and direct dials for all 671 telecom transformation consultants based in Spain. Start with a free account, no credit card.

Download this list →

Related lists

Telecom transformation consultants by geography

Browse the directory

Browse: Companies home · All Spain lists · All Telecom transformation consultants lists · New lists

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.