Company lists · Data refreshed September 2026

Top 25 Enterprise telephony providers based in Brazil

RevenueBase identified 416 enterprise telephony providers headquartered in Brazil as of September 2026 and tracks 4,423 professional contacts across them, including 646 with verified work emails. Sao Paulo is the largest hub.

This list covers enterprise telephony 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
416Companies
4,423Contacts tracked
646Verified emails
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The 25 largest enterprise telephony providers based in Brazil

Ranked by team size
Top 25 of 416 enterprise telephony 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 telephony 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 evidenceOsasco, BrazilHQ checked Sep 28, 2026201-500273 contacts →

Indirect evidence

“A Handphone Telecomunicações é uma indústria, fabricante de equipamentos para Telecomunicações, tais como sistemas PABX de pequeno, médio e grande porte, sistemas Call Center's…”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 2026201-500235 contacts →

Indirect evidence

“A Telium, criada em 2004 para atender exclusivamente o mercado B2B, atende os segmentos de Telecom e IDC com infraestrutura de padrão internacional, totalmente adequada e…”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceFlorianópolis, BrazilHQ checked Sep 28, 2026201-500207 contacts →

Partial evidence

“Khomp is a Brazilian company, based in Santa Catarina, which provides leading edge technology for the development of convergence solutions between computer and telephony, in the…”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceGoias, BrazilHQ checked Sep 28, 2026n/a178 contacts →

Indirect evidence

“Somos especialistas em telecomunicações para empresas, contamos com atendimento diferenciado e exclusivo, respeitando e satisfazendo o perfil do cliente.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceBrasília, BrazilHQ checked Sep 28, 202651-200140 contacts →

Indirect evidence

“A A.Telecom é resultado das atualizações e mudanças no segmento de TI e telecomunicação.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 202611-5061 contacts →

Indirect evidence

“Na Agil Telecom, trabalhamos para simplificar a comunicação das empresas.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceSao Paulo, BrazilHQ checked Sep 28, 202651-20044 contacts →

Indirect evidence

“O Grupo Union Telecom é referência em telecomunicações, oferecendo aos clientes e parceiros 20 anos de experiência, com profissionais capacitados, certificados e experientes.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidencePetrópolis, BrazilHQ checked Sep 28, 202651-20040 contacts →

Indirect evidence

“RedT is a Rio de Janeiro based company commited to develop and deploy communication solutions mainly using VoIP solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceFlorianopolis, BrazilHQ checked Sep 28, 202611-5040 contacts →

Partial evidence

“We develop state-of-the-art technology for corporate telephony and security.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceCuritiba, BrazilHQ checked Sep 28, 2026201-50037 contacts →

Indirect evidence

“With offices in North and South America, and across Europe, Alhambra offers a global presence with localized solutions, support, and expertise.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 202611-5036 contacts →

Indirect evidence

“A Voitel atua há mais de 20 anos no mercado e é pioneira em Telefonia IP.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceBoituva, BrazilHQ checked Sep 28, 202651-20036 contacts →

Partial evidence

“BR Conecta started its activities in 2005 by bringing the VoIP telephony service to the interior of São Paulo, based in the city of Boituva.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceRecife, BrazilHQ checked Sep 28, 202611-5036 contacts →

Indirect evidence

“Soluções econômicas e eficazes para você e para sua empresa.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceFortaleza, BrazilHQ checked Sep 28, 202611-5035 contacts →

Indirect evidence

“A NPX é uma empresa que atua no mercado de telecomunicações e tem como objetivo principal oferecer serviços que otimizem a utilização do sistema de telefonia utilizado pelos seus…”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceMontes Claros, BrazilHQ checked Sep 28, 202611-5032 contacts →

Indirect evidence

“SEG Tech is a Brazilian company with excellence and focus on dedicated telecommunications projects.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSão Mateus, BrazilHQ checked Sep 28, 202651-20032 contacts →

Indirect evidence

“A Zafex é referência em telecomunicações e inovação tecnológica, consolidando-se como líder em Telefonia e Internet na região de São Mateus e Guriri, além de oferecer Telefonia…”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceJuiz De Fora, BrazilHQ checked Sep 28, 202651-20032 contacts →

Indirect evidence

“A VIRTUAL TELECOM é uma empresa de telecomunicações fundada no ano de e licenciada pela ANATEL para operar o Serviço de Comunicação Multimídia (SCM) em âmbito nacional e…”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 202651-20032 contacts →

Indirect evidence

“A Tellfree é provedora de soluções de comunicações para o mercado corporativo.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceSao Paulo, BrazilHQ checked Sep 28, 202651-20030 contacts →

Indirect evidence

“A Fale Paco entrega para seus clientes uma experiência única de qualidade, inovação e economia.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 202611-5029 contacts →

Indirect evidence

“Empresa de Telecomunicações focada em soluções para o mercado corporativo de pequenas e médias empresas.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceRecife, BrazilHQ checked Sep 28, 202651-20026 contacts →

Indirect evidence

“Tradicionalmente, as empresas adquiriram e implantaram sua própria infra-estrutura de comunicações, no entanto, a economia mudou em favor de um modelo de provedor de serviços.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceSanto Anastácio, BrazilHQ checked Sep 28, 202651-20026 contacts →

Indirect evidence

“A Phonevox Group é uma empresa de destaque no setor de telecomunicações, oferecendo uma ampla gama de produtos e soluções para melhorar o atendimento e a comunicação dos…”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceCuritiba, BrazilHQ checked Sep 28, 202611-5025 contacts →

Indirect evidence

“A tecnologia da informação marcou uma grande revolução na maneira com que as empresas atuam no mercado e realizam seus negócios.”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceCampinas, BrazilHQ checked Sep 28, 202611-5024 contacts →

Indirect evidence

“VulcaNet Systems and Engineering is a Computer and Telecommunications Engineering Company, which develops Intelligent Unified Communications and Multichannel Assistance Platforms.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceJoinville, BrazilHQ checked Sep 28, 202611-5023 contacts →

Indirect evidence

“Fundada em 1989 na cidade de Joinville-SC com o nome Sigmafone, a Wonit é uma empresa de Telecom e TI genuinamente brasileira que iniciou suas atividades com foco na revenda e…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 416 enterprise telephony providers based in Brazil

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Enterprise telephony providers based in Brazil at a glance

As of Sep 28, 2026
14.6%Verified-email coverage
10.6Average contacts per company
11-50Median size (employees)
27.2%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
203
11-50
173
51-200
28
201-500
8
501-1,000
1
1,001-5,000
1
10001+
1

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 416 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 telephony 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 telephony 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 telephony 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 telephony 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, 646 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 telephony providers by metro

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 telephony 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 telephony providers are there based in Brazil?

RevenueBase identified 416 enterprise telephony 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?

Handphone Telecomunicações, headquartered in Osasco, tops this list with the largest team on record.

Which city has the most enterprise telephony providers?

Sao Paulo leads with 113 headquartered companies, followed by Curitiba (22) and Belo Horizonte (18).

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 646 verified decision-maker contacts tracked across these 416 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.