> ## Documentation Index > Fetch the complete documentation index at: https://aisa.one/docs/llms.txt > Use this file to discover all available pages before exploring further. # CNPJ Office Lookup > Look up the registered profile of a Brazilian company office (establishment) by its 14-digit CNPJ tax ID. Returns the office's legal/company name, trade name (`alias`), registration status, founding date, full address, shareholder/member structure, and primary/secondary economic activities (CNAE). Billed $0.00528 per call (1 credit per lookup). A "company not found" result returns HTTP 404 with a valid JSON body and is still billed 1 credit; only 429, 5xx, and network errors are not billed. ## OpenAPI ````yaml openapi/zh/cnpja.json GET /apis/v1/cnpja/office/{taxId} openapi: 3.1.0 info: description: '' title: CNPJá (Brazilian company registry / CNPJ) version: '1' x-aisa-capabilities: idempotency: Idempotency-Key max_price: X-AISA-Max-Price-USD quote: header: X-AISA-Cost-Mode value: quote x-aisa-configured-paths: - /apis/v1/cnpja/office/{taxId} x-aisa-document: facts_hash: 568ccf978ba01d1adb0cc82125cc488a63fa248224bddd6aa159af6184df6c90 generator_version: '2' protocol_version: '1' schema_version: '1' composer_version: '13' response_pending: [] document_hash: sha256:2df2dd00a7d19d928dd9176a77ba9726cbde6e08351af0396161d5b013307a92 x-aisa-plans: builder: 1 display_plan: payg payg: 1 similarweb_payg: 1 team: 1 version: e70a0959cd1b93b84ae16dffd7a538273ddb9c1d46277b82823c37ff1b6bc0fb x-aisa-provider: cnpja x-aisa-catalogs: cnpja: title: CNPJá (Brazilian company registry / CNPJ) description: '' x-aisa-document: facts_hash: 568ccf978ba01d1adb0cc82125cc488a63fa248224bddd6aa159af6184df6c90 generator_version: '2' protocol_version: '1' schema_version: '1' x-aisa-plans: builder: 1 display_plan: payg payg: 1 similarweb_payg: 1 team: 1 version: e70a0959cd1b93b84ae16dffd7a538273ddb9c1d46277b82823c37ff1b6bc0fb x-aisa-capabilities: idempotency: Idempotency-Key max_price: X-AISA-Max-Price-USD quote: header: X-AISA-Cost-Mode value: quote servers: - url: https://api.aisa.one security: - bearerAuth: [] paths: /apis/v1/cnpja/office/{taxId}: get: tags: - cnpja summary: CNPJ Office Lookup description: >- Look up the registered profile of a Brazilian company office (establishment) by its 14-digit CNPJ tax ID. Returns the office's legal/company name, trade name (`alias`), registration status, founding date, full address, shareholder/member structure, and primary/secondary economic activities (CNAE). Billed $0.00528 per call (1 credit per lookup). A "company not found" result returns HTTP 404 with a valid JSON body and is still billed 1 credit; only 429, 5xx, and network errors are not billed. operationId: get_cnpja_office_lookup parameters: - name: taxId in: path required: true description: >- The 14-digit Brazilian CNPJ number of the office to look up (digits only, no punctuation). Punctuated input fails routing. Example: `06990590000123`. schema: type: string example: '06990590000123' - in: query name: geocoding required: false schema: type: boolean - in: query name: links required: false schema: maxLength: 256 type: string - in: query name: maxAge required: false schema: type: integer - in: query name: maxStale required: false schema: type: integer - in: query name: registrations required: false schema: maxLength: 256 type: string - in: query name: simples required: false schema: type: boolean - in: query name: simplesHistory required: false schema: type: boolean - in: query name: strategy required: false schema: maxLength: 32 type: string - in: query name: suframa required: false schema: type: boolean responses: '200': description: The registered office profile for the given CNPJ. content: application/json: schema: type: object properties: updated: type: string description: >- Timestamp of the last update of this record at the revenue service (ISO 8601). taxId: type: string description: The 14-digit CNPJ of this office. alias: type: - string - 'null' description: >- Trade name (nome fantasia) of the office, when registered. Returns `null` for offices without a registered trade name. founded: type: string description: Registration/opening date of the office (YYYY-MM-DD). head: type: boolean description: Whether this office is the company headquarters (matriz). statusDate: type: string description: Date of the current registration status (YYYY-MM-DD). status: type: object description: Registration status of the office (e.g. Ativa / Baixada). properties: id: type: integer text: type: string company: type: object description: The parent legal entity. properties: id: type: string description: >- Company identifier (8 digits, may include leading zeros). name: type: string description: Legal name (razão social) of the company. equity: type: number description: Registered share capital. nature: type: object description: Legal nature (natureza jurídica) of the company. properties: id: type: integer text: type: string size: type: object description: Company size classification (porte). properties: id: type: integer acronym: type: string text: type: string members: type: array description: >- Shareholder / partner structure (quadro societário). Each entry describes a member and, when applicable, their legal representative (agent). items: type: object properties: since: type: string description: Date the member joined (YYYY-MM-DD). role: type: object properties: id: type: integer text: type: string person: type: object properties: id: type: string name: type: string type: type: string description: LEGAL or NATURAL. taxId: type: string description: Partially masked for natural persons. age: type: - string - 'null' description: Age band for natural persons. country: type: object properties: id: type: integer name: type: string agent: type: - object - 'null' description: >- Legal representative of the member, when the member is a foreign or legal entity. properties: role: type: object properties: id: type: integer text: type: string person: type: object properties: id: type: string name: type: string type: type: string taxId: type: string age: type: - string - 'null' country: type: object properties: id: type: integer name: type: string address: type: object description: Registered address of the office. properties: municipality: type: integer description: IBGE municipality code. street: type: string number: type: string details: type: - string - 'null' description: Address complement (complemento). district: type: string city: type: string state: type: string zip: type: string country: type: object properties: id: type: integer name: type: string phones: type: array description: Registered phone numbers. items: type: object properties: type: type: string description: e.g. LANDLINE / MOBILE. area: type: string description: Area code (DDD). number: type: string emails: type: array description: Registered email addresses. items: type: object properties: ownership: type: string description: e.g. CORPORATE / PERSONAL. domain: type: string address: type: string mainActivity: type: object description: Primary economic activity (CNAE) of the office. properties: id: type: integer text: type: string sideActivities: type: array description: Secondary economic activities (CNAE). items: type: object properties: id: type: integer text: type: string example: updated: '2026-09-08T20:11:15.000Z' taxId: '06990590000123' company: id: '06990590' name: GOOGLE BRASIL INTERNET LTDA. equity: 200000000 nature: id: 2062 text: Sociedade Empresária Limitada size: id: 5 acronym: DEMAIS text: Demais members: - since: '2004-09-01' role: id: 37 text: Sócio Pessoa Jurídica Domiciliado no Exterior person: id: f172f1f6-46f5-5a10-9fb9-8d7c2dbdc2f9 name: GOOGLE LLC type: LEGAL taxId: '06947284000104' country: id: 840 name: Estados Unidos agent: role: id: 17 text: Procurador person: id: 1cf6c284-8400-5c85-89e3-b20e0093be5a name: Yun Ki Lee type: NATURAL taxId: '***746608**' age: 51-60 country: id: 76 name: Brasil - since: '2014-08-26' role: id: 5 text: Administrador person: id: dc20e638-a27c-547c-bb7d-5ee7cbd917b7 name: Fabio Jose Silva Coelho type: NATURAL taxId: '***133807**' age: 61-70 country: id: 76 name: Brasil alias: null founded: '2004-09-01' head: true statusDate: '2004-09-01' status: id: 2 text: Ativa address: municipality: 3550308 street: Avenida Brig Faria Lima number: '3477' details: Andar 17A20 Tsul 2 17A20 district: Itaim Bibi city: São Paulo state: SP zip: '04538133' country: id: 76 name: Brasil phones: - type: LANDLINE area: '11' number: '23958400' emails: - ownership: CORPORATE domain: google.com address: googlebrasil@google.com mainActivity: id: 6319400 text: >- Portais, provedores de conteúdo e outros serviços de informação na Internet sideActivities: - id: 4751201 text: >- Comércio varejista especializado de equipamentos e suprimentos de informática - id: 6201501 text: Desenvolvimento de programas de computador sob encomenda - id: 6202300 text: >- Desenvolvimento e licenciamento de programas de computador customizáveis - id: 6311900 text: >- Tratamento de dados, provedores de serviços de aplicação e serviços de hospedagem na Internet - id: 6462000 text: Holdings de instituições não financeiras - id: 7319004 text: Consultoria em publicidade - id: 8299799 text: >- Outras atividades de serviços prestados principalmente às empresas não especificadas anteriormente default: content: application/json: schema: {} description: >- Error response; upstream passthrough responses may use provider formats components: securitySchemes: bearerAuth: scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.