Company lists · Data refreshed September 2026
Top 25 Dark fiber providers based in Brazil
RevenueBase identified 348 dark fiber providers headquartered in Brazil as of September 2026 and tracks 5,779 professional contacts across them, including 373 with verified work emails. Sao Paulo is the largest hub.
This list covers dark fiber 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 19, 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.
The 25 largest dark fiber providers based in Brazil
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 361 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 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 290 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 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 266 contacts → | ||||
Indirect evidence “Conectando pessoas desde 2004, a Tely é a maior empresa de telecomunicações do Nordeste.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 243 contacts → | ||||
Indirect evidence “A FiBrasil é uma empresa especialista em rede neutra de fibra ótica, que nasceu com a missão de levar conectividade de alta qualidade para cada vez mais pessoas, atendendo…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 218 contacts → | ||||
Indirect evidence “A INFOLINK TELECOM é uma empresa especializada em produtos e serviços de comunicação e tecnologia, presente no mercado desde 2004 com DNA de servir com qualidade e excelência…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 207 contacts → | ||||
Indirect evidence “LIGAR OS PONTOS.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 136 contacts → | ||||
Indirect evidence “Ampernet está à mais de 24 anos no mercado de internet, prestando serviços de qualidade para seus clientes em mais de 40 cidades.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 135 contacts → | ||||
Indirect evidence “Somos uma empresa com + de 20 anos de experiência em conexões.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 124 contacts → | ||||
Indirect evidence “A Loga® Internet é uma empresa capixaba, que nasceu na cidade de Linhares e está expandindo a sua atuação por meio do fornecimento de internet por fibra óptica para pessoas…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 114 contacts → | ||||
Indirect evidence “Por mais de 14 anos, sabemos da responsabilidade que é fazer parte da vida de milhares de pessoas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 80 contacts → | ||||
Indirect evidence “Xturbo é Fibra Ótima!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 69 contacts → | ||||
Indirect evidence “Nosso objetivo principal é oferecer aos moradores de Santana de Parnaíba, Cajamar e região, soluções de internet com excelência, utilizando a tecnologia de alta velocidade da…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 54 contacts → | ||||
Indirect evidence “Com 13 anos de atuação, somos o provedor de internet 100% fibra ótica que mais cresce na região de Sorocaba, atendendo Salto de Pirapora, Votorantim, Sorocaba, Araçoiaba da Serra…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 52 contacts → | ||||
Indirect evidence “A Brsulnet é uma provedora de internet banda larga, oferecendo ultra velocidade de acesso por meio da conexão via fibra óptica.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 46 contacts → | ||||
Indirect evidence “A LCI Telecom esta há mais de 25 anos no mercado com um backbone com mais de Km de fibra ótica, o qual interliga o norte do MT a capital.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 44 contacts → | ||||
Indirect evidence “A Horizons Telecom é uma empresa de telecomunicações que oferece soluções e serviços em fibra ótica, sob medida, para empresas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 43 contacts → | ||||
Indirect evidence “Partimos para a tecnologia de cabeamento metálico, essa tecnologia nos deu a oportunidade de levarmos mais velocidade aos nossos clientes, começamos a atender nossos clientes com…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 38 contacts → | ||||
Indirect evidence “A Junto Telecom é uma das maiores empresas de infraestrutura de rede de backbone de fibra ótica da região Norte e Centro-Oeste, com uma cobertura de mais de 37 mil quilômetros…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 38 contacts → | ||||
Indirect evidence “Operadora de Internet Fibra Óptica de Turbo Velocidade- Banda Larga Residencial - Banda Larga Corporativo com IPfixo - Redes Corporativas LAN2LAN-MPLS-VPN - Interligação de Matriz…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 36 contacts → | ||||
Indirect evidence “Fundada em Contagem - MG, a FIBINET nasceu com a missão de oferecer de forma acessível, uma conexão de internet rápida e com muita qualidade, através de um atendimento humanizado…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 27 contacts → | ||||
Indirect evidence “A Conectiva é uma empresa de telecomunicações especializada no fornecimento de internet banda larga via fibra óptica de alta performance.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 25 contacts → | ||||
Indirect evidence “Somos especializados em oferecer conexão com ultra qualidade através de equipamentos de última geração e rede fibra óptica minuciosamente elaborada.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 contacts → | ||||
Indirect evidence “Por aqui a definição de internet de ultra velocidade e atendimento foi atualizada.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 21 contacts → | ||||
Indirect evidence “A Conexão Vip nasceu há mais de 16 anos, com sede em Teófilo Otoni, Minas Gerais, pela visão empreendedora do Marcello Souza, e de lá pra cá vem construindo uma história de…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 20 contacts → | ||||
Indirect evidence “A Conect é uma empresa mineira de telecomunicações fundada com a parceria entre dois primos.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: dark fiber providers. 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 dark fiber providers.
- Partial evidence
- Its own public description names part of dark fiber providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name dark fiber providers. 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 348 dark fiber providers based in Brazil
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Dark fiber providers based in Brazil at a glance
As of Sep 19, 2026Companies by employee count
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 348 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 dark fiber 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 “dark fiber 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 dark fiber 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 dark fiber 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, 373 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 19, 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 dark fiber 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 dark fiber providers are there based in Brazil?
RevenueBase identified 348 dark fiber 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?
VIP Telecom, headquartered in Maua, tops this list with the largest team on record.
Which city has the most dark fiber providers?
Sao Paulo leads with 17 headquartered companies, followed by Belo Horizonte (10) and Goiania (8).
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 373 verified decision-maker contacts tracked across these 348 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 19, 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.