Company lists · Data refreshed September 2026

Top 25 Telecommunications consultants worldwide

Name: Telecommunications consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 35,706 companies tracked

RevenueBase identified 35,706 telecommunications consultants worldwide as of September 2026 and tracks 539,613 professional contacts across them, including 104,522 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecommunications consultants 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 30, 2026. Country and city lists for telecommunications consultants 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 30, 2026 86% judged on-target in blind review

35,706Companies

539,613Contacts tracked

104,522Verified emails

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The 25 largest telecommunications consultants worldwide

Ranked by team size

Top 25 of 35,706 telecommunications consultants worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications 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	Serede	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 30, 2026	10001+	8,011 contacts →
	Indirect 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 30, 2026
2	Icomon Tecnologia Ltda	Indirect evidence	São Paulo, BrazilHQ checked Sep 30, 2026	10001+	4,895 contacts →
	Indirect evidence “A Icomon atua há 37 anos com alta performance em tecnologia e telecomunicações.” Source: RevenueBase Database · checked Sep 30, 2026
3	Amaris Consulting	Indirect evidence	Chêne-bourg, SwitzerlandHQ checked Sep 30, 2026	5,001-10,000	4,824 contacts →
	Indirect evidence “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Source: RevenueBase Database · checked Sep 30, 2026
4	Tata Communications Transformation Services Tcts	Indirect evidence	Mumbai, IndiaHQ checked Sep 30, 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 30, 2026
5	Alten Italia	Indirect evidence	Milan, ItalyHQ checked Sep 30, 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 30, 2026
6	GTL Limited	Indirect evidence	Navi Mumbai, IndiaHQ checked Sep 30, 2026	1,001-5,000	2,780 contacts →
	Indirect 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 30, 2026
7	Airtel Business	Indirect evidence	Gurgaon, IndiaHQ checked Sep 30, 2026	10001+	2,760 contacts →
	Indirect evidence “The B2B arm of Bharti Airtel, we are India's leading provider of secure and reliable connectivity, technology, and communications solutions.” Source: RevenueBase Database · checked Sep 30, 2026
8	Procisa DO Brasil	Indirect evidence	São Paulo, BrazilHQ checked Sep 30, 2026	1,001-5,000	2,538 contacts →
	Indirect evidence “Prazer, somos a Procisa do Brasil!” Source: RevenueBase Database · checked Sep 30, 2026
9	Sirti S.P.A	Indirect evidence	Sesto San Giovanni (mi), ItalyHQ checked Sep 30, 2026	1,001-5,000	2,332 contacts →
	Indirect 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 30, 2026
10	Granite Telecommunications	Partial evidence	Quincy, MA, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,270 contacts →
	Partial evidence “Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.” Source: RevenueBase Database · checked Sep 30, 2026
11	LCC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 30, 2026	5,001-10,000	2,193 contacts →
	Indirect evidence “In Feb.” Source: RevenueBase Database · checked Sep 30, 2026
12	Kddi Corporation	Partial evidence	Tokyo, JapanHQ checked Sep 30, 2026	10001+	1,966 contacts →
	Partial evidence “We are Japan’s global telecommunications pioneer and a Global Fortune 500 company, providing our international customer base with data centers, networks, content delivery, system…” Source: RevenueBase Database · checked Sep 30, 2026
13	Infinera	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,959 contacts →
	Indirect evidence “Infinera is now part of Nokia.” Source: RevenueBase Database · checked Sep 30, 2026
14	IES Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 30, 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 30, 2026
15	Ability Tecnologia E Serviços S A	Indirect evidence	Osasco, BrazilHQ checked Sep 30, 2026	1,001-5,000	1,733 contacts →
	Indirect evidence “Com mais de funcionários, a Ability Tecnologia e Serviços S.A.” Source: RevenueBase Database · checked Sep 30, 2026
16	Camusat	Indirect evidence	Paris, FranceHQ checked Sep 30, 2026	1,001-5,000	1,726 contacts →
	Indirect 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 30, 2026
17	PT Berca Hardayaperkasa	Indirect evidence	Jakarta Pusat, IndonesiaHQ checked Sep 30, 2026	1,001-5,000	1,701 contacts →
	Indirect evidence “Since its establishment in 1990, PT.” Source: RevenueBase Database · checked Sep 30, 2026
18	Telecon	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 30, 2026	1,001-5,000	1,573 contacts →
	Indirect 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 30, 2026
19	Pt. Mora Telematika Indonesia TBK	Partial evidence	Jakarta Pusat, IndonesiaHQ checked Sep 30, 2026	1,001-5,000	1,510 contacts →
	Partial evidence “Moratelindo is part of PT Ekamas Mora RepublikTbk (MoraRepublic), one of Indonesia’s largest integrated infrastructure Telecommunication and connectivity providers.” Source: RevenueBase Database · checked Sep 30, 2026
20	Tulip Telecom	Indirect evidence	New Delhi, IndiaHQ checked Sep 30, 2026	1,001-5,000	1,481 contacts →
	Indirect evidence “Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Source: RevenueBase Database · checked Sep 30, 2026
21	Sofrecom Tunisie	Indirect evidence	Tunis, TunisiaHQ checked Sep 30, 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 30, 2026
22	DNA OYJ	Indirect evidence	Helsinki, FinlandHQ checked Sep 30, 2026	1,001-5,000	1,366 contacts →
	Indirect evidence “In English below.) Miltä DNA:lla työskentely tuntuu?” Source: RevenueBase Database · checked Sep 30, 2026
23	Trace3	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,345 contacts →
	Indirect evidence “Trace3 delivers business transformation.” Source: RevenueBase Database · checked Sep 30, 2026
24	Italtel	Indirect evidence	Milan, GermanyHQ checked Sep 30, 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 30, 2026
25	CYTA	Partial evidence	Λευκωσία, CyprusHQ checked Sep 30, 2026	1,001-5,000	1,208 contacts →
	Partial evidence “Cyta was established with the aim of providing, maintaining and developing a comprehensive telecommunications service, both nationally and internationally.” Source: RevenueBase Database · checked Sep 30, 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: telecommunications 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 telecommunications consultants.
Partial evidence: Its own public description names part of telecommunications consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications 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 35,706 telecommunications consultants worldwide

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Telecommunications consultants worldwide at a glance

As of Sep 30, 2026

19.4%Verified-email coverage

15.1Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

17,689

11-50

12,235

51-200

3,986

201-500

997

501-1,000

348

1,001-5,000

234

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 telecommunications 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.
Coverage: Every country. Country and city lists for telecommunications consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecommunications 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 telecommunications 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 telecommunications consultants, 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, 104,522 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 30, 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 consultants by location

177 lists · largest first

Every Telecommunications consultants 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 telecommunications 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 telecommunications consultants are there worldwide?

RevenueBase identified 35,706 telecommunications consultants 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 telecommunications consultants?

The United States leads with 6,862 companies, followed by Brazil (2,418) and the United Kingdom (2,238). Every telecommunications consultants list by country and city is linked on this page.

Which city has the most telecommunications consultants?

Sao Paulo leads with 522 headquartered companies, followed by London (425) and Madrid (221).

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 104,522 verified decision-maker contacts tracked across these 35,706 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 30, 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.