CNAE 4221-9/04 · Rio Grande do Sul

Construção de estações e redes de telecomunicações in Rio Grande do Sul

101 active companies are headquartered in Rio Grande do Sul with this CNAE as their main activity. They represent 7.7% of Brazil's active companies with the same main activity.

Source: Receita Federal, CNPJ Open Data · October 2026 publication

The same activity in Brazil 1,316

What this list shows

We count each active company once, by its head office in this state and this CNAE as its main activity. Branches and secondary activities are excluded from this scope. The total describes the registry, not market revenue or company quality.

Companies in Rio Grande do Sul: 101; 7.7% of Brazil's
Of every 100 companies in Rio Grande do Sul: 0.0; do this activity
Among Brazil's federative units: 4th; by companies in this activity

Active companies in Rio Grande do Sul

More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 2 of 4

INTEROPTICS DO BRASIL TECNOLOGIA LTDAPorto Alegre (RS)
MHPROJETOS LTDANovo Hamburgo (RS)
EINHARDT TELECOMUNICACOES LTDAPelotas (RS)
MASTER REDES LOGICAS LTDAPorto Alegre (RS)
SUL SITE TELECOM CONSTRUCOES DE TORRES LTDASapucaia do Sul (RS)
VISION TELECOM CONSTRUCAO E MANUTENCAO LTDAIjuí (RS)
SITIT SOLUCOES DE INFRAESTRUTURAS PARA TECNOLOGIA, INFORMACAO E TELEFONIA LTDAPorto Alegre (RS)
VSM SERVICOS DE INFRAESTRUTURA LTDAPasso Fundo (RS)
CEMIK SOLUCOES EM REDE LTDANovo Hamburgo (RS)
OMNITECH TELECOM LTDACaxias do Sul (RS)
VIASITES SOLUCOES LTDASão Sepé (RS)
TORRES RS CONSTRUCOES LTDASapucaia do Sul (RS)
JAIME E MACHADO LTDAPasso Fundo (RS)
AM TELECOM LTDACachoeirinha (RS)
MESCK TELECOM LTDABalneário Pinhal (RS)
T. MORAES NUNES SOLUCOES LTDAAlvorada (RS)
KD-TELECOMUNICACOES LTDAIjuí (RS)
LASER TELECOMUNICACOES LTDANovo Hamburgo (RS)
CETELCOM TELECOMUNICACOES LTDAPorto Alegre (RS)
DKR TELECOMUNICACOES E INFORMATICA LTDAPorto Alegre (RS)
EVSAT TELECOMUNICACOES LTDASanta Cruz do Sul (RS)
LA TELECOM - SERVICOS DE TELECOMUNICACOES LTDAErechim (RS)
HUNOFF METALURGICA LTDACaxias do Sul (RS)
FUSAO SOLUCOES EM TECNOLOGIA LTDAFlores da Cunha (RS)
PAULO & PABLO INSTALACOES DE REDES DE TELECOMUNICACOES LTDAErechim (RS)
GTEC INSTALACOES LTDAFarroupilha (RS)
AGINET SERVICOS DE REDE DE TELECOMUNICACOES LTDAVera Cruz (RS)
CARLA SIMONE REBOLLO RODRIGUEZ LTDASanta Maria (RS)
TEC FIBER SERVICOS DE COMUNICACOES LTDARio Pardo (RS)
LETIOFF SERVICOS DE TELECOM LTDACapão da Canoa (RS)

List limited to 101 companies, 30 per page. Looking for a specific company? Search by name or CNPJ.

How to assess a company's data

When you open a company's record, use these guides to check the data and understand what each field can establish.

How to look up a CNPJ
Check identifiers, dates and registry fields against official sources.
What an active CNPJ means
Active status does not show that a company is debt-free, licensed or able to operate.
How to read partner and administrator records
Understand QSA roles and the limits on ownership and representation information.

How much the activity weighs

of every 100 active companies, how many do this activity

Rio Grande do Sul0.0
Brazil0.0

In Rio Grande do Sul, the activity weighs 1.2 times what it does in Brazil.

Rio Grande do Sul's cities with the most companies in this activity

active companies and each city's share of the state

1 Porto Alegre 28.7% 29
2 Erechim 7.9% 8
3 Sapucaia do Sul 6.9% 7
4 Novo Hamburgo 5.9% 6
5 Alvorada 3.0% 3
6 Caxias do Sul 3.0% 3
7 Santa Cruz do Sul 3.0% 3
8 Santa Maria 3.0% 3
9 São Leopoldo 3.0% 3
10 Imbé 2.0% 2

20 more cities

Class 4221-9 in Rio Grande do Sul

obras para geração e distribuição de energia elétrica e para telecomunicações, by subclass

Subclass	Active
4221-9/01 Construção de barragens e represas para geração de energia elétrica	10
4221-9/02 Construção de estações e redes de distribuição de energia elétrica	160
4221-9/03 Manutenção de redes de distribuição de energia elétrica	83
4221-9/04 Construção de estações e redes de telecomunicações · this one	101
4221-9/05 Manutenção de estações e redes de telecomunicações	140

Close to this: 6190-6/99 · Outras atividades de telecomunicações não especificadas anteriormente, 1,731 companies in Rio Grande do Sul.

What activity 4221-9/04 is

As obras para implantação de serviços de telecomunicações: #- construção de redes de longa e média distância de telecomunicações
A execução de projetos de instalações para estações de telefonia e centrais telefônicas

See everything this activity covers

Frequently asked questions

How many companies have main CNAE 4221-9/04 in Rio Grande do Sul?

101 active companies have CNAE 4221-9/04 as their main activity in Rio Grande do Sul, according to the Receita Federal's October 2026 publication. That is 0.0 of every 100 companies there, against 0.0 in Brazil.

Which of Rio Grande do Sul's cities has the most companies in this activity?

Porto Alegre, with 29, 28.7% of the state's companies in this activity.

Why can this total differ from the companies operating in this state?

This scope counts active companies by their head office and registered main activity. A company may operate in this state through a branch or carry out the activity as a secondary activity and be excluded from the count. The registered address and CNAE do not establish every operating location or service.

Does active status mean a company is qualified for a contract?

No. Active status describes the Receita Federal registration. It does not establish tax compliance, creditworthiness, licences, ability to fulfil a contract or quality. Check the relevant official documents and the contract's requirements.

How we count

Active companies with this as their main activity, counted by head office in Rio Grande do Sul.