Company lists · Data refreshed September 2026

Top 25 Enterprise telecommunications providers based in Brazil

RevenueBase identified 1,618 enterprise telecommunications providers headquartered in Brazil as of September 2026 and tracks 89,987 professional contacts across them, including 5,482 with verified work emails. Sao Paulo is the largest hub.

This list covers enterprise telecommunications providers headquartered in Brazil, 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.

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
1,618Companies
89,987Contacts tracked
5,482Verified emails
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The 25 largest enterprise telecommunications providers based in Brazil

Ranked by team size
Top 25 of 1,618 enterprise telecommunications providers based in Brazil, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise telecommunications providers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 28, 202610001+13,575 contacts →

Indirect evidence

“Aqui na Oi, trabalhamos para criar novos futuros e levar a vida digital para todos.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 20261,001-5,0002,538 contacts →

Indirect evidence

“Prazer, somos a Procisa do Brasil!”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 20261,001-5,0002,521 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
4Indirect evidenceSao Paulo, BrazilHQ checked Sep 28, 20261,001-5,0002,162 contacts →

Indirect evidence

“Somos a Vero, uma empresa de telecomunicações brasileira.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceTimbó, BrazilHQ checked Sep 28, 20261,001-5,0001,807 contacts →

Indirect evidence

“Somos uma empresa de telecomunicações com 28 anos de atuação.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceOsasco, BrazilHQ checked Sep 28, 20261,001-5,0001,733 contacts →

Indirect evidence

“Com mais de funcionários, a Ability Tecnologia e Serviços S.A.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceLondrina, BrazilHQ checked Sep 28, 2026501-1,0001,001 contacts →

Indirect evidence

“A Sercomtel é a empresa paranaense de telecomunicações que oferece soluções completas em telefonia.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 2026501-1,000819 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
9Indirect evidenceItabira, BrazilHQ checked Sep 28, 20261,001-5,000775 contacts →

Indirect evidence

“Há mais de 25 anos, a Valenet leva conexão para empresas, lares e comunidades.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceGoiânia, BrazilHQ checked Sep 28, 20261,001-5,000522 contacts →

Indirect evidence

“Somos uma empresa líder em telecomunicações na região Centro-Oeste.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceFreguesia Do Ó, BrazilHQ checked Sep 28, 2026201-500405 contacts →

Indirect evidence

“Fundada em 1975, a ICATEL Telecomunicações Ltda é uma empresa especializada em Telefonia de Uso Público e de Soluções completas para Telecomunicações : Atuando nos segmentos de…”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 28, 202651-200377 contacts →

Indirect evidence

“Smart internet and telephony solutions for you business.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceMauá, BrazilHQ checked Sep 28, 2026501-1,000361 contacts →

Indirect evidence

“A VIP TELECOM é uma marca que faz parte do Grupo Alloha Fibra, a maior empresa independente de fibra Óptica no Brasil.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidencePelotas, BrazilHQ checked Sep 28, 2026201-500356 contacts →

Indirect evidence

“Desde 2005, buscamos sempre as melhores soluções em telecomunicações para pessoas e empresas.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceCajuru, BrazilHQ checked Sep 28, 20261,001-5,000342 contacts →

Indirect evidence

“Olá, somos a Alcans!”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSao Paulo, BrazilHQ checked Sep 28, 2026201-500325 contacts →

Indirect evidence

“We connect people, companies and their businesses through integrated and secure communication solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceCuritiba, BrazilHQ checked Sep 28, 20261,001-5,000319 contacts →

Indirect evidence

“Radiante Engenharia, há mais de 30 anos, oferecendo a infraestrutura completa para operadoras e provedores.”

Source: RevenueBase Database · checked Sep 28, 2026
18Partial evidenceNatal, BrazilHQ checked Sep 28, 20261,001-5,000296 contacts →

Partial evidence

“Believing in the potential of the people from Rio Grande do Norte, a group of partners envisioned excellent business prospects in telecommunications in Potiguares lands.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidencePorto Alegre, BrazilHQ checked Sep 28, 2026501-1,000291 contacts →

Indirect evidence

“Aqui, conexão não é promessa.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceNova Friburgo, BrazilHQ checked Sep 28, 2026201-500290 contacts →

Indirect evidence

“Há 23 anos no mercado, somos a primeira empresa de Internet e Telecomunicações da Região Serrana do Rio de Janeiro e pioneira no uso de Fibra Óptica no Brasil.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 2026201-500279 contacts →

Indirect evidence

“A IK Solution dispõe de diversas soluções inovadoras para seu negócio sair na frente.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceJoao Pessoa, BrazilHQ checked Sep 28, 2026201-500266 contacts →

Indirect evidence

“Conectando pessoas desde 2004, a Tely é a maior empresa de telecomunicações do Nordeste.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceSalvador, BrazilHQ checked Sep 28, 2026201-500260 contacts →

Indirect evidence

“A ITS Brasil é líder em provimento de acesso à internet no Estado da Bahia, com mais de 600km de Rede de Fibra DWDM.”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceCamaragibe, BrazilHQ checked Sep 28, 2026201-500245 contacts →

Indirect evidence

“Começamos a escrever nossa história há 15 anos.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceUberlandia, BrazilHQ checked Sep 28, 20261,001-5,000240 contacts →

Indirect evidence

“A Algar Telecom, empresa do grupo Algar, possui um amplo portfólio com soluções de telecomunicações e tecnologia para atender clientes corporativos (B2B) e do varejo (B2C).”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 1,618 enterprise telecommunications providers based in Brazil

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Enterprise telecommunications providers based in Brazil at a glance

As of Sep 28, 2026
6.1%Verified-email coverage
55.6Average contacts per company
11-50Median size (employees)
15.8%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
574
11-50
648
51-200
266
201-500
77
501-1,000
18
1,001-5,000
18
5,001-10,000
2
10001+
9

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 1,618 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 enterprise telecommunications providers, 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 Brazil whose own description of what they do matches “enterprise telecommunications providers”. 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 telecommunications providers), 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 telecommunications providers, and records with no verified work email. Companies headquartered outside Brazil 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, 5,482 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.

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 telecommunications providers, 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 telecommunications providers are there based in Brazil?

RevenueBase identified 1,618 enterprise telecommunications providers headquartered in Brazil 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?

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

Which city has the most enterprise telecommunications providers?

Sao Paulo leads with 256 headquartered companies, followed by Rio De Janeiro (84) and Belo Horizonte (62).

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 5,482 verified decision-maker contacts tracked across these 1,618 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.