Company lists · Data refreshed September 2026

Top 25 Enterprise telecom consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 21,299 companies tracked

RevenueBase identified 21,299 enterprise telecom consulting firms worldwide as of September 2026 and tracks 299,886 professional contacts across them, including 67,154 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers enterprise 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 28, 2026. Country and city lists for enterprise 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 28, 2026 86% judged on-target in blind review

21,299Companies

299,886Contacts tracked

67,154Verified emails

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The 25 largest enterprise telecom consulting firms worldwide

Ranked by team size

Top 25 of 21,299 enterprise telecom consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise 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	Amaris Consulting	Partial evidence	Chêne-bourg, SwitzerlandHQ checked Sep 28, 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 28, 2026
2	Management Solutions	Partial evidence	Madrid, SpainHQ checked Sep 28, 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 28, 2026
3	Alten Italia	Indirect evidence	Milano, ItalyHQ checked Sep 28, 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 28, 2026
4	VEE Technologies	Partial evidence	Decatur, GA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,933 contacts →
	Partial evidence “Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.” Source: RevenueBase Database · checked Sep 28, 2026
5	GTL Limited	Strong evidence	Navi Mumbai, IndiaHQ checked Sep 28, 2026	1,001-5,000	2,780 contacts →
	Strong 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 28, 2026
6	Spread Tecnologia	Indirect evidence	São Paulo, BrazilHQ checked Sep 28, 2026	1,001-5,000	2,521 contacts →
	Indirect evidence “With over 30 years of experience in Information and Communication Technology market, the Spread has extensive experience and expertise in the field and has the challenge of…” Source: RevenueBase Database · checked Sep 28, 2026
7	Sirti S.P.A	Partial evidence	Sesto San Giovanni (mi), ItalyHQ checked Sep 28, 2026	1,001-5,000	2,332 contacts →
	Partial evidence “Sirti is Italy's leading technology company in the design and production of network infrastructures and telecoms system integration.” Source: RevenueBase Database · checked Sep 28, 2026
8	LCC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,193 contacts →
	Indirect evidence “In Feb.” Source: RevenueBase Database · checked Sep 28, 2026
9	IES Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,800 contacts →
	Indirect evidence “IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…” Source: RevenueBase Database · checked Sep 28, 2026
10	Camusat	Partial evidence	Paris, FranceHQ checked Sep 28, 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 28, 2026
11	Telecon	Partial evidence	Montreal, QC, CanadaHQ checked Sep 28, 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 28, 2026
12	Tulip Telecom	Strong evidence	New Delhi, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,481 contacts →
	Strong evidence “Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Source: RevenueBase Database · checked Sep 28, 2026
13	Sofrecom Tunisie	Indirect evidence	Tunis, TunisiaHQ checked Sep 28, 2026	1,001-5,000	1,397 contacts →
	Indirect evidence “Sofrecom, filiale du groupe France Télécom - Orange, a développé depuis plus de 45 ans un savoir-faire unique dans les métiers de l’opérateur, qui en fait aujourd’hui l’un des…” Source: RevenueBase Database · checked Sep 28, 2026
14	Italtel	Indirect evidence	Milan, GermanyHQ checked Sep 28, 2026	1,001-5,000	1,279 contacts →
	Indirect evidence “We help our customers to choose the most suitable solutions for the characteristics of their business, to develop the traditional communication technologies they already have in…” Source: RevenueBase Database · checked Sep 28, 2026
15	Zelenza	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	1,001-5,000	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 28, 2026
16	Zinnov	Partial evidence	The Woodlands, TX, United StatesHQ checked Sep 28, 2026	201-500	1,101 contacts →
	Partial evidence “Zinnov is a full-stack global management consulting firm specializing in GCC set-up and scale-up, M&A, PE advisory, AI strategy, and partner ecosystem growth for technology…” Source: RevenueBase Database · checked Sep 28, 2026
17	CCI Systems	Partial evidence	Iron Mountain, MI, United StatesHQ checked Sep 28, 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 28, 2026
18	ACP Gruppe	Partial evidence	Wien Und München, AustriaHQ checked Sep 28, 2026	1,001-5,000	1,076 contacts →
	Partial evidence “ACP bietet herstellerunabhängig Consulting, Beschaffung und Integration, Managed Services, Datacenter Services sowie IT-Finanzierung für das gesamte IT-Sortiment und betreut…” Source: RevenueBase Database · checked Sep 28, 2026
19	Kelly Group	Indirect evidence	Wembley, United KingdomHQ checked Sep 28, 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 28, 2026
20	AUSY	Indirect evidence	Sèvres Cedex, GermanyHQ checked Sep 28, 2026	5,001-10,000	1,039 contacts →
	Indirect evidence “The story of AUSY by Randstad started in France in 1989.” Source: RevenueBase Database · checked Sep 28, 2026
21	KGPCO	Indirect evidence	Faribault, MN, United StatesHQ checked Sep 28, 2026	1,001-5,000	974 contacts →
	Indirect evidence “KGPCo is a key strategic partner to the world’s leading communication and technology companies creating the next generation of networks.” Source: RevenueBase Database · checked Sep 28, 2026
22	Líder Telecom Ltda	Partial evidence	São Paulo, BrazilHQ checked Sep 28, 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 28, 2026
23	NTG Clarity	Strong evidence	Markham, ON, CanadaHQ checked Sep 28, 2026	501-1,000	876 contacts →
	Strong 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 28, 2026
24	NUMEN	Partial evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	501-1,000	828 contacts →
	Partial evidence “Numen is an international consultancy specialized in enterprise technologies.” Source: RevenueBase Database · checked Sep 28, 2026
25	Mundivox Communications	Indirect evidence	São Paulo, BrazilHQ checked Sep 28, 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 28, 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: enterprise 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 enterprise telecom consulting firms.
Partial evidence: Its own public description names part of enterprise 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 enterprise 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 21,299 enterprise telecom consulting firms worldwide

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Enterprise telecom consulting firms worldwide at a glance

As of Sep 28, 2026

22.4%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11,301

11-50

7,009

51-200

2,133

201-500

512

501-1,000

162

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 enterprise 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: Every country. Country and city lists for enterprise telecom consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “enterprise 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 enterprise 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 enterprise 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, 67,154 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 28, 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.

Enterprise telecom consulting firms by location

118 lists · largest first

Every Enterprise 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 enterprise 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 enterprise telecom consulting firms are there worldwide?

RevenueBase identified 21,299 enterprise 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?

Amaris Consulting, headquartered in Chene-Bourg, tops this list with the largest team on record.

Which country has the most enterprise telecom consulting firms?

The United States leads with 4,775 companies, followed by Brazil (1,309) and the United Kingdom (932). Every enterprise telecom consulting firms list by country and city is linked on this page.

Which city has the most enterprise telecom consulting firms?

Sao Paulo leads with 357 headquartered companies, followed by London (250) and Paris (167).

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 67,154 verified decision-maker contacts tracked across these 21,299 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 28, 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.