Japan Business Registry (NTA Houjin Bangou & gBizINFO) & Open Business Companies Data: 13-digit Corporate Number (Houjin Bangou), Official Portals & Master Data

What You Need to Know at a Glance: Japan Business Registry & Company Master Data (NTA Houjin Bangou & gBizINFO)

When verifying a counterparty, auditing legal existence, or compiling company master data in Japan, the authoritative starting point is National Tax Agency (NTA) Corporate Number Publication Site (Houjin Bangou) & METI gBizINFO using the entity’s 13-digit Corporate Number (Houjin Bangou). The broader institutional architecture in Japan connects 15 verified public-sector portals maintained by National Tax Agency, gBizINFO, Government of Japan, Statistics Bureau of Japan. Primary legal-entity lookup routes include gBizINFO (gBizINFO) and gBizINFO service information (gBizINFO).

To supplement statutory registration records from NTA Houjin Bangou & gBizINFO, official verification workflows in Japan draw upon fiscal and taxpayer registration via NTA Corporate Number Publication Site (National Tax Agency) and NTA About Corporate Numbers (National Tax Agency); open data catalogues and statistical business frames through gBizINFO API (gBizINFO) and e-Gov Data Portal (Government of Japan); financial supervision, capital-market disclosures, and LEI records from EDINET API materials (Financial Services Agency / EDINET) and GLEIF LEI records for Japan (GLEIF); public procurement notices, official gazettes, and intellectual-property registers such as Japan Procurement Portal (Government of Japan) and J-PlatPat (INPIT / Japan patent information platform).

How the Official Japan Business Registry (NTA Houjin Bangou & gBizINFO) & Public Data Ecosystem Work

Japan is one of the strongest non-European jurisdictions for official company-data work because the National Tax Agency publishes a Corporate Number system with search, Web API, full downloads and daily change files. That gives data teams a real official identifier backbone for Japanese corporations and organizations.

Japan company-data work has four main layers: Corporate Number identity, official company-profile enrichment, official open-data/statistics/procurement sources, and regulated or specialized sources such as EDINET, J-PlatPat and GLEIF. These layers are complementary but not interchangeable.

Coverage risk: Corporate Number data is the core identifier layer, but it does not contain every commercial-register extract, director field, financial filing or private contact. gBizINFO enriches profiles but is not a replacement for legal registration evidence. EDINET covers securities-disclosure filers, not all companies. J-PlatPat covers IP records. GLEIF covers only entities with LEIs.

Access risk: Japan separates public search, full downloads, daily change files, Web API use, portal search, API documentation, securities-disclosure APIs and IP search. A page that is public in the browser is not automatically an unrestricted permission to reuse every field commercially.

Update risk: Corporate Number full downloads and daily change files require baseline-plus-delta logic. gBizINFO, EDINET, procurement, statistics, IP and LEI records each have their own update cadence. Store source date, endpoint and field provenance next to every value.

Official Japan Business Registry, Company Data API & Master Data Portals (15 Verified Sources)

Core Corporate Registry, Entity Lookup & Statutory Filings

gBizINFO — gBizINFO

Data & Access: search / company profile portal

Terms & Operational Scope: gBizINFO and endpoint-specific public-data terms. Not a replacement for legal-register extracts or Corporate Number source authority.

gBizINFO service information — gBizINFO

Data & Access: documentation

Terms & Operational Scope: gBizINFO terms and service notices. Documentation is context; use live source/API pages for ingestion evidence.

Tax Authority, Fiscal Registration & Customs Identifiers

NTA Corporate Number Publication Site — National Tax Agency

Data & Access: search / publication site

Terms & Operational Scope: Public Data License and NTA terms; attribution and no-endorsement caution. Basic identifier layer, not a full commercial-register document corpus.

NTA About Corporate Numbers — National Tax Agency

Data & Access: documentation

Terms & Operational Scope: Public Data License and NTA terms. Descriptive evidence; use operating pages for ingestion details.

NTA Corporate Number full download — National Tax Agency

Data & Access: bulk download / CSV / XML

Terms & Operational Scope: Public Data License and NTA terms. Not every company-register field; file handling, encoding and update timing matter.

NTA Corporate Number daily change download — National Tax Agency

Data & Access: daily change files / bulk update

Terms & Operational Scope: Public Data License and NTA terms. Change-window logic is required; not a historical document archive.

NTA Corporate Number Web API — National Tax Agency

Data & Access: Web API / application ID

Terms & Operational Scope: Public Data License plus API-use conditions. Requires application ID and responsible rate/endpoint handling.

NTA Corporate Number terms of use — National Tax Agency

Data & Access: terms / licence

Terms & Operational Scope: Public Data License with attribution and no-endorsement style conditions. Dataset-specific notices and API conditions still need checking.

National Open Data Portals, Bulk Feeds & Statistical Agencies

gBizINFO API — gBizINFO

Data & Access: REST API / documentation

Terms & Operational Scope: gBizINFO API and endpoint-specific terms. Authentication, rate limits and field coverage must be checked before production use.

e-Gov Data Portal — Government of Japan

Data & Access: catalogue / dataset discovery

Terms & Operational Scope: Japan government open-data terms and dataset-specific notices. Catalogue metadata is not source authority for every legal-entity field.

Statistics Japan Establishment Frame Database — Statistics Bureau of Japan

Data & Access: statistics / documentation

Terms & Operational Scope: statistics publication terms and attribution requirements. Statistical frame, not a public record-level company register.

Central Bank, Financial Supervision, Capital Markets & LEI

EDINET API materials — Financial Services Agency / EDINET

Data & Access: API / documents / XBRL

Terms & Operational Scope: EDINET/FSA API and document terms. Covers securities-disclosure filers, not all registered entities.

GLEIF LEI records for Japan — GLEIF

Data & Access: API / bulk-style open data

Terms & Operational Scope: GLEIF open data terms. Only entities with LEIs; not comprehensive Corporate Number or registry coverage.

Public Procurement & Intellectual Property Registers

Japan Procurement Portal — Government of Japan

Data & Access: portal / tender and procurement workflows

Terms & Operational Scope: portal and notice-level terms. Procurement subset only; not a complete company universe.

J-PlatPat — INPIT / Japan patent information platform

Data & Access: IP search portal

Terms & Operational Scope: J-PlatPat and IP-publication terms. IP owner names require matching and do not prove current legal status or contact permission.

Complete Comparison Matrix: Japan Business Registry (NTA Houjin Bangou & gBizINFO), Company Master Data & Open Data APIs

Official Source	Issuing Authority	Access & Data Provided	Reuse & Licensing	Operational Scope & Boundaries
NTA Corporate Number Publication Site	National Tax Agency	search / publication site	Public Data License and NTA terms; attribution and no-endorsement caution	Basic identifier layer, not a full commercial-register document corpus.
NTA About Corporate Numbers	National Tax Agency	documentation	Public Data License and NTA terms	Descriptive evidence; use operating pages for ingestion details.
NTA Corporate Number full download	National Tax Agency	bulk download / CSV / XML	Public Data License and NTA terms	Not every company-register field; file handling, encoding and update timing matter.
NTA Corporate Number daily change download	National Tax Agency	daily change files / bulk update	Public Data License and NTA terms	Change-window logic is required; not a historical document archive.
NTA Corporate Number Web API	National Tax Agency	Web API / application ID	Public Data License plus API-use conditions	Requires application ID and responsible rate/endpoint handling.
NTA Corporate Number terms of use	National Tax Agency	terms / licence	Public Data License with attribution and no-endorsement style conditions	Dataset-specific notices and API conditions still need checking.
gBizINFO	gBizINFO	search / company profile portal	gBizINFO and endpoint-specific public-data terms	Not a replacement for legal-register extracts or Corporate Number source authority.
gBizINFO service information	gBizINFO	documentation	gBizINFO terms and service notices	Documentation is context; use live source/API pages for ingestion evidence.
gBizINFO API	gBizINFO	REST API / documentation	gBizINFO API and endpoint-specific terms	Authentication, rate limits and field coverage must be checked before production use.
e-Gov Data Portal	Government of Japan	catalogue / dataset discovery	Japan government open-data terms and dataset-specific notices	Catalogue metadata is not source authority for every legal-entity field.
Statistics Japan Establishment Frame Database	Statistics Bureau of Japan	statistics / documentation	statistics publication terms and attribution requirements	Statistical frame, not a public record-level company register.
Japan Procurement Portal	Government of Japan	portal / tender and procurement workflows	portal and notice-level terms	Procurement subset only; not a complete company universe.
EDINET API materials	Financial Services Agency / EDINET	API / documents / XBRL	EDINET/FSA API and document terms	Covers securities-disclosure filers, not all registered entities.
J-PlatPat	INPIT / Japan patent information platform	IP search portal	J-PlatPat and IP-publication terms	IP owner names require matching and do not prove current legal status or contact permission.
GLEIF LEI records for Japan	GLEIF	API / bulk-style open data	GLEIF open data terms	Only entities with LEIs; not comprehensive Corporate Number or registry coverage.

Operational Scope, Access Workflows & What Is Missing from Public Japan Registry Records

A Japan model should keep Corporate Number identity, profile enrichment and specialist sources in separate tables. The core entity table should store normalized legal name, Corporate Number, address fields, change-date logic, source timestamps and language/script handling. Bridge tables should handle gBizINFO records, EDINET filer codes, procurement supplier names, IP owner names and LEIs.

Japan is strong, but official open data still leaves gaps. Corporate Number data does not replace all commercial-register extracts or legal documents. gBizINFO is an enrichment source, not a full legal registry. EDINET is limited to securities-disclosure filers. J-PlatPat is IP-focused. Procurement records cover public buying. LEIs cover only entities that have LEIs.

Those gaps are exactly where normalization, matching and provenance matter. A commercial dataset should show which fields came from NTA Corporate Number data, which came from gBizINFO or EDINET, and which are enrichment signals from procurement, statistics, IP or LEI sources.

CompaniesData turns the Japan source stack into a practical dataset: normalized company names, Corporate Number matching, source provenance, update tracking, enrichment hooks and contact-data governance. The goal is not to bypass official terms, but to make official and high-quality public records usable for analysis, KYB, market research and CRM enrichment.

For one company, start with NTA Corporate Number search, then check gBizINFO and any specialist source that fits the company type: EDINET for securities filings, J-PlatPat for IP, p-portal for procurement and GLEIF for LEI-bearing entities.

For repeatable workflows, build a Corporate Number baseline from the full download, apply daily change files and use the Web API for lookups. Add gBizINFO API and EDINET only after terms, endpoint limits and field coverage are documented.

• Best official backbone: NTA Corporate Number Publication Site, about page, full download, daily change download, Web API and terms of use.
• Best machine-access story: the Corporate Number full files, daily change files and Web API are unusually strong official ingestion routes for company identifiers.
• Best enrichment layers: gBizINFO portal/API, e-Gov Data Portal, Statistics Japan, Japan Procurement Portal, EDINET, J-PlatPat and GLEIF.
• Main caution: Corporate Number data should not be described as complete free bulk access to every legal-register filing or natural-person field.
• CompaniesData value: a usable dataset needs identifier resolution, Japanese/English name handling, provenance, update logic, enrichment joins and contact-data governance.
• Start with Corporate Number identity: use the NTA publication site, terms, full download, daily change download and Web API to normalize legal identity.
• Add profile enrichment: use gBizINFO portal and API for official profile attributes, public-sector links and company-context enrichment.
• Add filings and regulated layers: use EDINET for securities-disclosure filers and GLEIF for LEI-bearing entities.

Frequently Asked Questions: Japan Business Registry (NTA Houjin Bangou & gBizINFO) & Company Data

Is Japan a good country for open company data?

Yes. Japan is strong because the National Tax Agency publishes Corporate Number search, full downloads, daily change files and a Web API. gBizINFO and EDINET add important official enrichment layers.

Is Corporate Number data the same as a full company register?

No. Corporate Number data is a powerful official identifier layer, but it is not every commercial-register filing, legal extract, officer detail, securities document or contact field.

Can Corporate Number data be downloaded in bulk?

Yes, the NTA publishes full download and daily change routes. Production users still need to preserve terms, update dates, file provenance, attribution and no-endorsement cautions.

What is gBizINFO useful for?

gBizINFO is useful for official profile enrichment and API-based company context. It should be joined to Corporate Number data with source provenance and not treated as a legal-register substitute.

Does EDINET cover all Japanese companies?

No. EDINET is a securities-disclosure source for filing-obligated entities. It is valuable for listed-company and financial-document enrichment, but not complete market coverage.

What is the best first source for automated ingestion?

Start with NTA Corporate Number full files, daily changes and Web API, then add gBizINFO API and EDINET where the business case and terms justify it.

Why use CompaniesData instead of collecting sources manually?

Manual collection leaves different identifiers, Japanese/English names, update dates and coverage rules. CompaniesData adds normalization, matching, provenance, enrichment and compliance boundaries.

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