CNAE 4399-1/05 · Rondônia
Drilling and construction of water wells in Rondônia
91 active companies are headquartered in Rondônia with this CNAE as their main activity. They represent 1.7% of Brazil's active companies with the same main activity.
Source: Receita Federal, CNPJ Open Data · October 2026 publication
The same activity in Brazil 5,395
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 Rondônia
- 91
- 1.7% of Brazil's
- Of every 100 companies in Rondônia
- 0.1
- do this activity
- Among Brazil's federative units
- 19th
- by companies in this activity
Active companies in Rondônia
More active establishments and higher registered capital first. This order is not a quality assessment or recommendation. · page 3 of 4- MAYCON DHIONE ASSUNCAO MOURAMonte Negro (RO)
- DAVID CIANQUETAAriquemes (RO)
- MANOEL TEIXEIRA OLIVEIRAPorto Velho (RO)
- SAMIRA CORLETTE DE CASTROPorto Velho (RO)
- ANDRE LUIS ARABE MARTINS DE OLIVEIRAJi-Paraná (RO)
- DAVI BUENO DA SILVA MONTEFUSCORolim de Moura (RO)
- JENARIO PEREIRA SOARESChupinguaia (RO)
- EDINALDO JOSE CORREAOuro Preto do Oeste (RO)
- ARLINDO ARAUJO BENTENCOURTHPorto Velho (RO)
- ROBSON HERNANDES SIQUEIRAPorto Velho (RO)
- EDNALDO ALVES DOS SANTOSAriquemes (RO)
- LOVANIO DE ABREU SILVACerejeiras (RO)
- ERIVELTON SANTOS DELAINAriquemes (RO)
- ZILDA PINHEIRO DA COSTA ALVESJi-Paraná (RO)
- ANDERSON DOS SANTOS RODRIGUESJi-Paraná (RO)
- JOZENILTON DOS SANTOS MOTAAriquemes (RO)
- EZEQUIEL CAMARGO DOS SANTOSCacoal (RO)
- ANDRESSA ALVES DA SILVA PANTOJAPorto Velho (RO)
- WESLEY SALES NUNESJi-Paraná (RO)
- FLAVIO ROBERTO VITRO SILVAJi-Paraná (RO)
- EDIVAN RODRIGUES DE ALMEIDAPorto Velho (RO)
- ANTONIO BIRALCacoal (RO)
- REGINALDO PEREIRA DOS SANTOSAriquemes (RO)
- RAQUEL NUNES DOS SANTOS DAUDT DE ALMEIDAPorto Velho (RO)
- SONIA MARIA DA SILVAAlta Floresta D'Oeste (RO)
- FRANCISCO PAULO FARIAS DE OLIVEIRA JUNIORPorto Velho (RO)
- FRANCISCO ARAUJO MACHADOPorto Velho (RO)
- MARCOS PAULO SOBRINHOPorto Velho (RO)
- CELCINO HENRIQUE MOREIRAJi-Paraná (RO)
- DIEGO ALEXANDRE FERREIRA DE ABREUPorto Velho (RO)
List limited to 91 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
- Rondônia0.1
- Brazil0.0
In Rondônia, the activity weighs 2.8 times what it does in Brazil.
Rondônia's cities with the most companies in this activity
active companies and each city's share of the state
- 1 Porto Velho 26.4% 24
- 2 Ji-Paraná 9.9% 9
- 3 Ariquemes 9.9% 9
- 4 Cacoal 9.9% 9
- 5 Vilhena 8.8% 8
- 6 Alta Floresta D'Oeste 6.6% 6
- 7 Rolim de Moura 4.4% 4
- 8 Ouro Preto do Oeste 3.3% 3
- 9 São Francisco do Guaporé 3.3% 3
- 10 Monte Negro 3.3% 3
11 more cities
- 11 Jaru 2
- 12 Cerejeiras 2
- 13 Guajará-Mirim 1
- 14 Chupinguaia 1
- 15 Cujubim 1
- 16 Pimenta Bueno 1
- 17 Presidente Médici 1
- 18 Costa Marques 1
- 19 Cabixi 1
- 20 Nova Brasilândia D'Oeste 1
- 21 Candeias do Jamari 1
Class 4399-1 in Rondônia
serviços especializados para construção não especificados anteriormente, by subclass| Subclass | Active |
|---|---|
| 4399-1/01 Construction management | 52 |
| 4399-1/02 Erection and dismantling of scaffolding and other temporary structures | 6 |
| 4399-1/03 Masonry works | 4,443 |
| 4399-1/04 Operation and supply of equipment for lifting loads and people on construction sites | 19 |
| 4399-1/05 Drilling and construction of water wells · this one | 91 |
| 4399-1/99 Specialized construction services not elsewhere classified | 438 |
What activity 4399-1/05 is
- A perfuração e construção de poços de água
Frequently asked questions
How many companies have main CNAE 4399-1/05 in Rondônia?
91 active companies have CNAE 4399-1/05 as their main activity in Rondônia, according to the Receita Federal's October 2026 publication. That is 0.1 of every 100 companies there, against 0.0 in Brazil.
Which of Rondônia's cities has the most companies in this activity?
Porto Velho, with 24, 26.4% 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 Rondônia.