CNPJ Aberto

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Search Brazilian companies by CNPJ.

About CNPJ Aberto

CNPJ Aberto is a search platform for Brazilian company data sourced from official public government registries under the Lei de Acesso à Informação, covering over 70 million companies and updated monthly. Users can look up businesses by CNPJ number, company name (razão social or nome fantasia), or by partner/shareholder names, retrieving registration details such as address, CNAE activity codes, capital, and registration status. Additional features include ownership structure (quadro societário), a navigable ownership network graph showing connections between companies and individuals, control tree mapping direct and indirect ownership up to the beneficial owner, monitoring alerts for changes in registration status, partners, capital, or CNAE, a lead generator filtering companies by sector, region, and size, and bulk CNPJ lookup with asynchronous CSV export.

The platform serves lawyers, accountants, credit analysts, journalists, developers, and entrepreneurs, supporting use cases like due diligence, compliance, client management, risk scoring, corporate investigation, and prospecting. Basic company search is free and unlimited without registration; a free account adds favorites, notes, monitoring for up to 3 CNPJs, advanced search, and preview access to the risk network and control tree tools.

A REST API returns structured JSON data on company registration, status, and partners. The Pro plan, starting at R$29/month, includes the full ownership network, control tree, lead generator, bulk queries, CSV export up to 3,000 rows, and 10,000 API requests per day. The Business plan, priced on request, adds an AI assistant, up to 5 team seats, a shared organizational research archive, and a pooled 50,000 daily API request limit.

Key features

Free search of 70M+ Brazilian companies by CNPJ, name, or partners (sócios)
Corporate network mapping showing hidden connections between companies and people
Ownership control tree with direct/indirect participation percentages and circular structure detection
Bulk CNPJ lookup with async CSV export of up to 3,000 rows
REST API returning structured JSON company and partner data
Monitoring alerts for changes in registration status, partners, capital, or CNAE

Frequently asked questions

Is CNPJ Aberto free to use?

Yes, searching and consulting companies on the site is unlimited on all plans, even without an account. A free account adds favorites, notes, monitoring for up to 3 CNPJs, advanced search, and previews of network/control tools.

What does the paid plan cost?

The Pro plan starts at R$29/month and includes corporate network view, lead generation, bulk queries, CSV export up to 3,000 rows, and an API with 10,000 requests/day; Business pricing is available on request.

Does it offer an API for developers?

Yes, it provides a documented REST API that returns structured JSON with CNPJ, company, and partner data, offering 10,000 requests/day on Pro or a 50,000 request pool on Business.

Where does the data come from and how current is it?

Data comes from official Brazilian government public databases, released under the Lei de Acesso à Informação and updated monthly.

Who is CNPJ Aberto designed for?

It is built for lawyers, accountants, credit analysts, journalists, developers, and entrepreneurs who need company due diligence, compliance, or lead generation data.

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