Corporate number lookup

Turn a Japanese corporate number into a traceable company record.

Japanese Corporate Numbers contain 13 digits and identify corporations and certain entities for public administration. Business Mix resolves the number against National Tax Agency public data and returns the official name, head-office address, changes and supported invoice context.

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Built in Japan · English-first JSON · Official and public source provenance · No government endorsement claimed

NO SIGN-UP · NO API KEY

Resolve a corporate number

Select the Corporate number example in the demo. Never enter an individual My Number; this service is for public corporate identifiers only.

Try it free — no signup

Look up a Japanese company

Enter an English company name, romanized location, corporate number, or T-prefixed invoice registration number. The API finds the official Japanese company record.

English input · Official Japanese output · No query history

English company name, corporate number, or invoice number

Try a sample

No Japanese typing is required. Enter an English or romanized company name and receive its official Japanese legal name, corporate number, location, and public evidence.

Your easy-to-read result appears here.

No account, API knowledge, or card is needed.

PRODUCTION REQUEST

Copy a request, then inspect the actual response contract.

The free key uses the same documented endpoint. Put the secret in a server-side environment variable and never commit it.

curl https://api.japanapistore.com/v1/business/1180301018771 -H "Authorization: Bearer ${JAPAN_API_KEY}"

Representative responseFields depend on evidence and input.

{"success":true,"business":{"corporate_number":"1180301018771","name_ja":"トヨタ自動車株式会社"},"nta":{"verified":true,"status":"verified"},"sources":[{"provider":"nta_corporate_number","status":"matched"}]}

SOURCES, FRESHNESS, LIMITS

Evidence you can inspect—not a black-box “Japan answer.”

The result exposes the NTA record status and freshness; cached or unavailable sources remain labeled.

National Tax Agency Corporate Number Publication Site

Used for: Public corporate number, legal name, head-office address and change status.
Freshness: The response reports source status and observed data version.
Transformation: Legal-form placement and name variants are normalized into English-friendly JSON.

National Tax Agency Qualified Invoice Issuer Publication System

Used for: Public qualified-invoice issuer registration status.
Freshness: Registration evidence is fetched and reported with source provenance.
Transformation: Corporate and invoice evidence are joined without implying government endorsement.

FREE DEVELOPER TIER

Use the demo now. Create a key only when you are ready to build.

No credit card for the free key. One dashboard gives access to the four existing APIs.

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