CNAE 4221-9/05 · Rio Grande do Sul

Maintenance of telecommunication stations and networks in Rio Grande do Sul

140 active companies are headquartered in Rio Grande do Sul with this CNAE as their main activity. They represent 9.6% of Brazil's active companies with the same main activity.

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

The same activity in Brazil 1,458

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: 140; 9.6% of Brazil's
Of every 100 companies in Rio Grande do Sul: 0.0; do this activity
Among Brazil's federative units: 3rd; 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 3 of 5

VERTEX FIBER SOLUTIONS LTDANovo Hamburgo (RS)
SIC TELECOMUNICACOES LTDACachoeirinha (RS)
T&A INSTALACOES LTDACaxias do Sul (RS)
FIBRA SERRA TELECOMUNICACOES E ELETRICIDADE LTDACaxias do Sul (RS)
PEDRO ILHA DE MIRANDA LIMITADASapucaia do Sul (RS)
G. SILVA DA SILVA LTDATaquari (RS)
ALESSANDRO DA SILVA SOLUCOES TECNOLOGICAS LTDA.Guaporé (RS)
4R MONTAGEM E MANUTENCAO DE ESTRUTURAS LTDA.Porto Alegre (RS)
ZCK SERVICOS EM TELECOMUNICACOES LTDAPorto Alegre (RS)
XAVIER SERVICOS EM TELECOMUNICACOES LTDAFlores da Cunha (RS)
CLIVAR TELECOMUNICACOES LTDATaquara (RS)
FLECKNET INSTALACOES DE REDES LTDABento Gonçalves (RS)
R P A TELECOMUNICACOES LTDATaquara (RS)
SHEREK FIBER CONNECTION LTDAFlores da Cunha (RS)
RAIMUNDI SERVICOS DE INSTALACOES LTDABento Gonçalves (RS)
TEDESCO GESTAO E TI LTDALajeado (RS)
S. P. DA ROSA LTDATaquara (RS)
H&D INSTALACOES ELETRICAS E DE TELEFONIA LTDASanto Cristo (RS)
HM SERVICOS DE REPARACAO E MANUTENCAO LTDACachoeirinha (RS)
WEBSITE TELECOM CONSTRUCOES E SERVICOS LTDACachoeirinha (RS)
HM SERVICOS DE MANUTENCAO DE SITES LTDACachoeirinha (RS)
JOAO PEDRO ALVES DOS SANTOS LTDAVacaria (RS)
J.E SISTEMAS DE SEGURANCA LTDAAlvorada (RS)
CARLOS ALBERTO ALVES DA SILVA LTDASeberi (RS)
F. DA SILVA AMARILHO LTDAOsório (RS)
HORIZON TECH CONSULTING LTDABom Princípio (RS)
LARISSA SIMON COMUNIC LTDANovo Hamburgo (RS)
PITANGUI SUL INFRAESTRUTURA E ENGENHARIA LTDAPorto Alegre (RS)
AOL INSTALACOES LTDANovo Hamburgo (RS)
CR AGUIAR SOLUCOES E TECNOLOGIA LTDAViamão (RS)

List limited to 140 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 1.5 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 23.6% 33
2 Novo Hamburgo 6.4% 9
3 Cachoeirinha 5.7% 8
4 Viamão 5.0% 7
5 Canoas 4.3% 6
6 Bento Gonçalves 3.6% 5
7 Gravataí 2.9% 4
8 Taquara 2.9% 4
9 Alvorada 2.1% 3
10 Caxias do Sul 2.1% 3

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 Construction of dams and reservoirs for electric power generation	10
4221-9/02 Construction of electric power stations and distribution networks	160
4221-9/03 Maintenance of electric power distribution networks	83
4221-9/04 Construction of telecommunication stations and networks	101
4221-9/05 Maintenance of telecommunication stations and networks · this one	140

Close to this: 9512-6/00 · Repair and maintenance of communication equipment, 3,324 companies in Rio Grande do Sul.

What activity 4221-9/05 is

A manutenção de estações e redes de longa e média distância de telecomunicações

See everything this activity covers

Frequently asked questions

How many companies have main CNAE 4221-9/05 in Rio Grande do Sul?

140 active companies have CNAE 4221-9/05 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 33, 23.6% 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.