Company lists · Data refreshed September 2026

Top 25 Telecom consulting firms worldwide

Name: Telecom consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 8,619 companies tracked

RevenueBase identified 8,619 telecom consulting firms worldwide as of September 2026 and tracks 179,949 professional contacts across them, including 33,196 with verified work emails and 13,354 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecom consulting firms worldwide, 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. Country and city lists for telecom consulting firms follow the table.

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

8,619Companies

179,949Contacts tracked

33,196Verified emails

13,354Mobile numbers

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The 25 largest telecom consulting firms worldwide

Ranked by team size

Top 25 of 8,619 telecom consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to telecom consulting firms: 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	Serede	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 6, 2026	10001+	8,011 contacts →
	Partial evidence “A Serede é uma empresa prestadora de serviços de implantação e manutenção em redes de Telecom, fundada em 06 de agosto de 2007.” Source: RevenueBase Database · checked Sep 6, 2026
2	Icomon Tecnologia Ltda	Partial evidence	São Paulo, BrazilHQ checked Sep 6, 2026	10001+	4,895 contacts →
	Partial evidence “A Icomon atua há 37 anos com alta performance em tecnologia e telecomunicações.” Source: RevenueBase Database · checked Sep 6, 2026
3	Amaris Consulting	Partial evidence	Chêne-bourg, SwitzerlandHQ checked Sep 6, 2026	5,001-10,000	4,824 contacts →
	Partial evidence “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Source: RevenueBase Database · checked Sep 6, 2026
4	Tata Communications Transformation Services Tcts	Indirect evidence	Mumbai, IndiaHQ checked Sep 6, 2026	1,001-5,000	4,599 contacts →
	Indirect evidence “Tata Communications Transformation Services (TCTS), a 100% subsidiary of Tata Communications Ltd, provides business transformation, managed network operations, network…” Source: RevenueBase Database · checked Sep 6, 2026
5	Management Solutions	Partial evidence	Madrid, SpainHQ checked Sep 6, 2026	1,001-5,000	4,468 contacts →
	Partial evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 6, 2026
6	Circet	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	10001+	3,901 contacts →
	Partial evidence “A global player in the telecom infrastructure services industry, the Circet Group provides operators, local authorities and key accounts throughout the world with an integrated…” Source: RevenueBase Database · checked Sep 6, 2026
7	Alten Italia	Indirect evidence	Milano, ItalyHQ checked Sep 6, 2026	1,001-5,000	3,085 contacts →
	Indirect evidence “Il Gruppo ALTEN, leader europeo nella consulenza per le tecnologie avanzate in campo ingegneristico e ICT, è quotato alla Borsa di Parigi e vanta più di 57.700 collaboratori in…” Source: RevenueBase Database · checked Sep 6, 2026
8	GTL Limited	Partial evidence	Navi Mumbai, IndiaHQ checked Sep 6, 2026	1,001-5,000	2,780 contacts →
	Partial evidence “GTL, a Global Group Enterprise, is a leading Network Services company, offering services and solutions to address the Network Life Cycle requirements of Telecom Operators…” Source: RevenueBase Database · checked Sep 6, 2026
9	LCC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 6, 2026	5,001-10,000	2,193 contacts →
	Indirect evidence “In Feb.” Source: RevenueBase Database · checked Sep 6, 2026
10	Camusat	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	1,001-5,000	1,726 contacts →
	Partial evidence “Camusat is one of the market leaders in the implementation of telecom infrastructures and one of the most experienced network developers.” Source: RevenueBase Database · checked Sep 6, 2026
11	Telecon	Partial evidence	Montreal, QC, CanadaHQ checked Sep 6, 2026	1,001-5,000	1,573 contacts →
	Partial evidence “From a regional telecom networks builder in 1967 in Quebec (Canada), Telecon has grown into a world-class industry-leading telecom networks design, infrastructure and connectivity…” Source: RevenueBase Database · checked Sep 6, 2026
12	Sofrecom	Partial evidence	Châtillon, FranceHQ checked Sep 6, 2026	1,001-5,000	1,326 contacts →
	Partial evidence “As a subsidiary of the Orange Group, Sofrecom advises, guides and supports the digital transformation and the green transition of the main telecommunications players : operators…” Source: RevenueBase Database · checked Sep 6, 2026
13	Cablex AG	Indirect evidence	Muri Bei Bern, SwitzerlandHQ checked Sep 6, 2026	1,001-5,000	1,091 contacts →
	Indirect evidence “Connected for the future with cablex.” Source: RevenueBase Database · checked Sep 6, 2026
14	CCI Systems	Partial evidence	Iron Mountain, MI, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,077 contacts →
	Partial evidence “CCI Systems is an employee-owned solution provider specializing in telecommunications, comprehensive network assessments, industry-leading engineering, drafting and design…” Source: RevenueBase Database · checked Sep 6, 2026
15	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 6, 2026	1,001-5,000	1,053 contacts →
	Indirect evidence “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Source: RevenueBase Database · checked Sep 6, 2026
16	Líder Telecom Ltda	Partial evidence	São Paulo, BrazilHQ checked Sep 6, 2026	1,001-5,000	959 contacts →
	Partial evidence “A Líder Telecom oferece aos clientes serviços de assessoria necessária ao estabelecimento de seu planejamento técnico e operacional para atendimento a redes corporativas de…” Source: RevenueBase Database · checked Sep 6, 2026
17	Colvatel	Indirect evidence	Bogota, ColombiaHQ checked Sep 6, 2026	1,001-5,000	954 contacts →
	Indirect evidence “33 años diseñando la infraestructura técnica que mueve a Colombia.” Source: RevenueBase Database · checked Sep 6, 2026
18	NTG Clarity	Partial evidence	Markham, ON, CanadaHQ checked Sep 6, 2026	501-1,000	876 contacts →
	Partial evidence “NTG CLARITY is a leader in delivering network, telecom, IT and infrastructure solutions to network service providers and medium and large enterprises.” Source: RevenueBase Database · checked Sep 6, 2026
19	Mundivox Communications	Indirect evidence	São Paulo, BrazilHQ checked Sep 6, 2026	501-1,000	819 contacts →
	Indirect evidence “Com mais de 25 anos de experiência, a Mundivox é uma operadora licenciada pela Anatel, especializada em soluções integradas de comunicação para o mercado corporativo.” Source: RevenueBase Database · checked Sep 6, 2026
20	Allied Telesis	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	816 contacts →
	Indirect evidence “Our world is increasing in complexity.” Source: RevenueBase Database · checked Sep 6, 2026
21	Between Technology	Indirect evidence	Barcelona, SpainHQ checked Sep 6, 2026	501-1,000	772 contacts →
	Indirect evidence “Boost your digital future with BETWEEN Technology, your indispensable strategic partner in the thrilling world of engineering and IT.” Source: RevenueBase Database · checked Sep 6, 2026
22	Nunsys	Indirect evidence	Paterna, SpainHQ checked Sep 6, 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 6, 2026
23	Detecon	Indirect evidence	Cologne, GermanyHQ checked Sep 6, 2026	1,001-5,000	721 contacts →
	Indirect evidence “Detecon makes the future possible, digital, interconnected, and human.” Source: RevenueBase Database · checked Sep 6, 2026
24	Tower Engineering Professionals	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 6, 2026	1,001-5,000	707 contacts →
	Indirect evidence “Tower Engineer Professionals was founded in 1997 by two tower-climbing engineers.” Source: RevenueBase Database · checked Sep 6, 2026
25	OFG	Partial evidence	Córdoba, SpainHQ checked Sep 6, 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 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: telecom consulting firms. 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 consulting firms.
Partial evidence: Its own public description names part of telecom consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom consulting firms. 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 8,619 telecom consulting firms worldwide

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Telecom consulting firms worldwide at a glance

As of Sep 6, 2026

18.4%Verified-email coverage

7.4%Mobile-number coverage

20.9Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · Sao Paulo

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

4,622

11-50

2,709

51-200

891

201-500

219

501-1,000

1,001-5,000

5,001-10,000

10001+

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 consulting firms, 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.
Coverage: 36 countries, largest first: the United States, Brazil, the United Kingdom, France, Spain, Italy, Germany, India, Canada, Mexico and 26 more. Country and city lists for telecom consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecom consulting firms”. 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 consulting firms), 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 consulting firms, and records with no verified work email.
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, 33,196 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 between September 6, 2026 and September 14, 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 consulting firms by location

62 lists · largest first

Every Telecom consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 consulting firms, 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 consulting firms are there worldwide?

RevenueBase identified 8,619 telecom consulting firms worldwide 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?

Serede, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which country has the most telecom consulting firms?

The United States leads with 2,314 companies, followed by Brazil (934) and the United Kingdom (594). Every telecom consulting firms list by country and city is linked on this page.

Which city has the most telecom consulting firms?

Sao Paulo leads with 215 headquartered companies, followed by London (147) and Paris (123).

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 33,196 verified decision-maker contacts tracked across these 8,619 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 14, 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.