Company lists · Data refreshed September 2026

Top 25 Enterprise telecom management firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 13,582 companies tracked

RevenueBase identified 13,582 enterprise telecom management firms worldwide as of September 2026 and tracks 247,778 professional contacts across them, including 50,286 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers enterprise telecom management 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 management 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

13,582Companies

247,778Contacts tracked

50,286Verified emails

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The 25 largest enterprise telecom management firms worldwide

Ranked by team size

Top 25 of 13,582 enterprise telecom management 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 management 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 28, 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 28, 2026
2	Icomon Tecnologia Ltda	Partial evidence	São Paulo, BrazilHQ checked Sep 28, 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 28, 2026
3	Spectrum Business	Indirect evidence	Stamford, CT, United StatesHQ checked Sep 28, 2026	10001+	3,044 contacts →
	Indirect evidence “Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Source: RevenueBase Database · checked Sep 28, 2026
4	Sysnet Global Technologies PVT LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 28, 2026	1,001-5,000	2,797 contacts →
	Indirect evidence “Think IT, Think Sysnet.” 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	Airtel Business	Indirect evidence	Gurgaon, IndiaHQ checked Sep 28, 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 28, 2026
7	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
8	Granite Telecommunications	Partial evidence	Quincy, MA, United StatesHQ checked Sep 28, 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 28, 2026
9	Aforeserve.com LTD	Partial evidence	Noida, IndiaHQ checked Sep 28, 2026	1,001-5,000	2,133 contacts →
	Partial evidence “Aforeserve delivers IT infrastructure services, field support, and managed operations for enterprises across India.” Source: RevenueBase Database · checked Sep 28, 2026
10	GAMMA	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,568 contacts →
	Indirect evidence “Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Source: RevenueBase Database · checked Sep 28, 2026
11	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
12	Tangoe	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,367 contacts →
	Partial evidence “Tangoe pioneered technology expense management more than 20 years ago, and today we’re the industry leader driving innovation through AI-powered automation, 70+ patents, and the…” Source: RevenueBase Database · checked Sep 28, 2026
13	FLŌ Networks	Indirect evidence	El Paso, TX, United StatesHQ checked Sep 28, 2026	501-1,000	1,250 contacts →
	Indirect evidence “Today fast, flexible networks are the foundation of every successful organization.” Source: RevenueBase Database · checked Sep 28, 2026
14	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
15	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
16	SAKON	Strong evidence	Concord, MA, United StatesHQ checked Sep 28, 2026	501-1,000	944 contacts →
	Strong evidence “Sakon helps enterprise clients in a wide range of industries control telecom spend and manage end-user devices more efficiently.” Source: RevenueBase Database · checked Sep 28, 2026
17	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
18	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
19	Kaizen IT Services Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 28, 2026	501-1,000	807 contacts →
	Indirect evidence “Kaizen is a premier IT Services company headquartered in Kolkata and having its presence in Pan India with 750 Plus Touch Points.” Source: RevenueBase Database · checked Sep 28, 2026
20	Bestel	Partial evidence	Nápoles, ItalyHQ checked Sep 28, 2026	501-1,000	798 contacts →
	Partial evidence “Somos un equipo de expertos en Telecomunicaciones y Tecnologías de Información.” Source: RevenueBase Database · checked Sep 28, 2026
21	Wds-Sicap	Strong evidence	Baar, SwitzerlandHQ checked Sep 28, 2026	n/a	777 contacts →
	Strong evidence “We are leading provider of telecom business intelligence and device management solutions.” Source: RevenueBase Database · checked Sep 28, 2026
22	Asiatech CO	Indirect evidence	Tehran, IranHQ checked Sep 28, 2026	501-1,000	777 contacts →
	Indirect evidence “Data Transmission company of Asiatech (#asiatech) was established in 2003 to provide IT-based services and obtained PAP license from the Communications Regulatory Authority (CRA)…” Source: RevenueBase Database · checked Sep 28, 2026
23	Calero	Partial evidence	Rochester, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	742 contacts →
	Partial evidence “Calero is redefining how enterprises manage technology spend by turning insight into action through automated intelligence.” Source: RevenueBase Database · checked Sep 28, 2026
24	Nunsys	Indirect evidence	Paterna, SpainHQ checked Sep 28, 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 28, 2026
25	Millenniumit ESP	Indirect evidence	Colombo, Sri LankaHQ checked Sep 28, 2026	201-500	723 contacts →
	Indirect evidence “MillenniumIT ESP (MIT ESP) has always stood for purpose-driven technology solutions for businesses across the globe.” 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 management 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 management firms.
Partial evidence: Its own public description names part of enterprise telecom management 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 management 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 13,582 enterprise telecom management firms worldwide

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Enterprise telecom management firms worldwide at a glance

As of Sep 28, 2026

20.3%Verified-email coverage

18.2Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

6,186

11-50

5,051

51-200

1,596

201-500

403

501-1,000

141

1,001-5,000

119

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 management 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 management firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “enterprise telecom management 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 management 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 management 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, 50,286 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 management firms by location

73 lists · largest first

Every Enterprise telecom management 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 management 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 management firms are there worldwide?

RevenueBase identified 13,582 enterprise telecom management 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 enterprise telecom management firms?

The United States leads with 3,205 companies, followed by Brazil (1,053) and the United Kingdom (895). Every enterprise telecom management firms list by country and city is linked on this page.

Which city has the most enterprise telecom management firms?

Sao Paulo leads with 262 headquartered companies, followed by London (153) and Dubai (94).

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 50,286 verified decision-maker contacts tracked across these 13,582 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.