CNAE 4312-6/00 · Rio de Janeiro (RJ)
Drilling and boring in Rio de Janeiro (RJ)
44 active companies are headquartered in Rio de Janeiro (RJ) with this CNAE as their main activity. They represent 3.1% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 1,419 · Rio de Janeiro 85
What this list shows
We count each active company once, by its head office in the city 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 de Janeiro (RJ)
- 44
- 3.1% of Brazil's
- Of every 100 companies in Rio de Janeiro (RJ)
- 0.0
- do this activity
- Among Rio de Janeiro's cities
- 1st
- by companies in this activity
Active companies in Rio de Janeiro (RJ)
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 1 of 2- LAYNE DO BRASIL SONDAGENS S.A.Rio de Janeiro (RJ)
- VORTEK MND LTDARio de Janeiro (RJ)
- E V B -ENVIROMENT BUSINESS BRAZIL LTDARio de Janeiro (RJ)
- SOLO GEOTECNIA E FUNDACAO LTDARio de Janeiro (RJ)
- GEOFUNDACAO ENGENHARIA E GEOTECNIA LTDARio de Janeiro (RJ)
- FJW PERFURACAO DIRECIONAL E LOCACAO DE EQUIPAMENTOS LTDARio de Janeiro (RJ)
- GM SERVICOS TECNICOS E SONDAGEM LTDARio de Janeiro (RJ)
- GEONOX FUNDACAO E INVESTIGACOES DE SOLO LTDARio de Janeiro (RJ)
- INDICE SUPORTE CALIFORNIA PERFURACOES E ENSAIOS LTDARio de Janeiro (RJ)
- BRASFORT GEOTECNIA E FUNDACOES ESPECIAIS LTDARio de Janeiro (RJ)
- SONDA LOPES FUNDACAO LTDARio de Janeiro (RJ)
- GEOSIGMA GEOLOGIA E SONDAGENS LTDARio de Janeiro (RJ)
- DW MND ENTREVIAS CONSTRUCAO E SERVICOS LTDARio de Janeiro (RJ)
- INDICE SUPORTE CALIFORNIA ANALISES E PERFURACOES LTDARio de Janeiro (RJ)
- ADEK SONDAGENS ENGENHARIA FUNDACOES E PROJETOS LTDARio de Janeiro (RJ)
- RIO STAR SERVICOS PARA CONSTRUCAO CIVIL E LOCACAO DE EQUIPAMENTOS LTDARio de Janeiro (RJ)
- LF SONDAGENS E INVESTIGACAO GEOTECNICA LTDARio de Janeiro (RJ)
- GEOVALLE SERVICOS DE SONDAGENS, FUNDACOES E TECNOLOGIA LTDARio de Janeiro (RJ)
- ATMOSFERA AMBIENTAL LTDA.Rio de Janeiro (RJ)
- RPJ CONSTRUCOES, FUNDACOES, SONDAGENS E PROJETOS LTDARio de Janeiro (RJ)
- RIO SOLO SONDAGEM LTDARio de Janeiro (RJ)
- ACIMPER IMPERMEABILIZACOES, FUROS E PERFURACOES LTDARio de Janeiro (RJ)
- GEOMETRICA SERVICOS DE SONDAGEM LTDARio de Janeiro (RJ)
- TERRADRILL SONDAGENS E MONITORAMENTO AMBIENTAL LTDARio de Janeiro (RJ)
- GMS SONDAGENS LTDARio de Janeiro (RJ)
- NATUS INVESTIGACAO AMBIENTAL LTDARio de Janeiro (RJ)
- ED PORTO SONDAGENS E PERFURACOES LTDARio de Janeiro (RJ)
- VANESSA ALVES SOLUCOES AMBIENTAIS LTDARio de Janeiro (RJ)
- NN SERVICOS DE SONDAGENS E FUNDACOES LTDARio de Janeiro (RJ)
- BRASFUROS PERFURACOES EM CONCRETO LTDARio de Janeiro (RJ)
List limited to 44 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 de Janeiro (RJ)0.0
- Rio de Janeiro0.0
- Brazil0.0
In Rio de Janeiro (RJ), the activity weighs less than in Brazil.
Rio de Janeiro's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Rio de Janeiro 51.8% 44
- 2 Rio das Ostras 8.2% 7
- 3 Duque de Caxias 7.1% 6
- 4 Niterói 3.5% 3
- 5 Japeri 2.4% 2
- 6 Barra Mansa 2.4% 2
- 7 Campos dos Goytacazes 2.4% 2
- 8 Magé 2.4% 2
- 9 Nova Iguaçu 2.4% 2
- 10 Petrópolis 2.4% 2
12 more cities
- 11 São Gonçalo 2
- 12 Belford Roxo 1
- 13 Areal 1
- 14 Cabo Frio 1
- 15 Casimiro de Abreu 1
- 16 Itaboraí 1
- 17 Macaé 1
- 18 Maricá 1
- 19 Miguel Pereira 1
- 20 São Fidélis 1
- 21 São João de Meriti 1
- 22 Volta Redonda 1
Class 4312-6 in Rio de Janeiro (RJ)
perfurações e sondagens, by subclassClose to this: 0600-0/01 · Extraction of crude petroleum and natural gas, 384 companies in Rio de Janeiro (RJ).
What activity 4312-6/00 is
- As sondagens destinadas à construção
- As perfurações e furos para investigação do solo e núcleo para fins de construção, com propósitos geofísicos, geológicos e similares
Frequently asked questions
How many companies have main CNAE 4312-6/00 in Rio de Janeiro (RJ)?
44 active companies have CNAE 4312-6/00 as their main activity in Rio de Janeiro (RJ), 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 de Janeiro's cities has the most companies in this activity?
Rio de Janeiro, with 44, 51.8% of the state's companies in this activity.
Why can this total differ from the companies operating in the city?
This scope counts active companies by their head office and registered main activity. A company may operate in the city 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 de Janeiro (RJ).