Fake Company Address Generator

A full mock company profile in one click

Real Brazilian B2B test data is hard to assemble because it is relational: a believable company profile needs a razão social, a nome fantasia, a CNPJ with valid mod-11 check digits, state and municipal registrations (IE / IM), a primary CNAE, a geographically coherent address (logradouro + number + neighbourhood + city + UF + CEP), phone, e-mail and a list of socios. Inventing those by hand for hundreds of seed rows is tedious; getting them coherent with each other — the CEP actually belonging to that city, the CNAE matching the company size, the IE following the state's rules — is what makes mock data trustworthy.

What's inside a coherent fake company

• Razão social and nome fantasia — legal name (e.g. "Souza & Almeida Tecnologia LTDA") plus brand name; reflects the most common Brazilian company types (LTDA, S.A., MEI, EIRELI).
• CNPJ — 14 digits with two mod-11 DVs; the new alphanumeric CNPJ (rolling out 2026) is also supported by the validator family.
• IE / IM — Inscrição Estadual follows per-state rules; Inscrição Municipal varies by city hall.
• CNAE — primary economic activity, coherent with the legal type (MEI can only adopt CNAEs from the official MEI list).
• Address — logradouro types span Rua, Avenida, Alameda, Praça, Travessa, Estrada, Rodovia, Largo, Beco. CEP is chosen so it actually maps to the city + UF (you can cross-check with ViaCEP or BrasilAPI).
• Socios — partners with their own mock CPFs and names; ownership percentages add up to 100%.

Where this fits in your stack

• ERP / accounting demos — populate the customers and suppliers ledger without leaking real Receita Federal data.
• CRM seed — Salesforce, HubSpot or RD Station accounts that look real enough to demo deduplication, segmentation and routing.
• Sefaz NF-e / NFS-e sandbox — a mock CNPJ whose DV passes the algorithm is the bare minimum to issue test invoices.
• eSocial sandbox — the government test environment needs employer profiles; coherent fakes make every API trace reproducible.
• BI dashboards — Power BI / Looker demos with believable distribution: comércio ≈ 40%, serviços ≈ 30%, indústria ≈ 10%, mirroring real Brazilian CNAE statistics.

LGPD, fraud and the legal line

Synthetic data is exempt from LGPD because it does not refer to any identifiable person — that is the whole point of generating it. The line you cannot cross is using a fake company profile to open a real account, issue real invoices or register at the Junta Comercial; that is the territory of arts. 171 (estelionato) and 299 (falsidade ideológica) of the Penal Code. A useful anti-pattern to avoid is letting the random CNPJ accidentally collide with a real one — generators that bias the prefix away from active ranges (or start with 00.000.000-style stale roots) reduce that risk dramatically.

FAQ

Does the CEP actually belong to the city? Yes — the generator picks a CEP whose first five digits map to the chosen UF and a plausible neighbourhood. You can verify with ViaCEP at viacep.com.br/ws/01310-100/json/.

Are the socios' CPFs also mocked? Yes. Each socio comes with a generated CPF that passes the official mod-11 algorithm but is not registered with the Receita Federal — coherent for tests, useless for fraud.

Can I open a real company with this? No. The data is structurally valid but not registered anywhere; the Junta Comercial would reject it on the first cross-check. Use the tool only for sandboxes, fixtures and demos.

Will it pass the Sefaz NF-e validator? The CNPJ math will pass the static DV check. The actual issuance depends on the test environment's whitelist — in production-shaped sandboxes you may still need a credential issued by Sefaz.

Why include the IE if it varies by state? Because most ERPs and tax engines branch on the presence of IE. Even a placeholder following the per-UF rule keeps the integration tests deterministic.