Look up a company by number

    Corporate Number number search (Japan)

    Free, official, source-cited — updated 2026-06.

    Search Company Records in Japan

    3 free lookups per day. No sign-up required.

    Reviewed by LemReveal Research TeamLast verified June 2026Primary source: gBizINFO / Legal Affairs Bureau

    How do I look up a company by its registration number in Japan?

    Enter the Corporate Number to look up a Japan company directly on gBizINFO / Legal Affairs Bureau. Unlike a name search, an Corporate Number returns exactly one entity, which is why it is the identifier to use for KYC, invoicing and contract checks.

    Step-by-step

    1. 1

      Find the Corporate Number on the paperwork

      The Corporate Number normally appears on invoices, contracts, the website footer or official correspondence. It is the number counterparties are required to quote.

    2. 2

      Search the Corporate Number

      Enter the number exactly as printed. Punctuation and spacing vary between documents — strip them if the search returns nothing.

    3. 3

      Confirm the returned entity

      Check the legal name on the returned record matches the name on your paperwork. A mismatch between quoted number and quoted name is a serious warning sign.

    4. 4

      Verify at gBizINFO / Legal Affairs Bureau

      For anything contractual, confirm the number against the primary source at https://info.gbiz.go.jp.

      https://info.gbiz.go.jp
    Open gBizINFO / Legal Affairs BureauAll Japan records

    Frequently asked questions

    What is a Corporate Number in Japan?

    It is the identifier gBizINFO / Legal Affairs Bureau assigns to a registered entity. It stays with the entity even if the trading name changes, which makes it the reliable way to track a company over time.

    Is a Corporate Number lookup free?

    Yes. Looking up a company by Corporate Number on gBizINFO / Legal Affairs Bureau is free and requires no account.

    What if the Corporate Number returns no result?

    Re-enter it without spaces or punctuation first. If it still returns nothing, the number may be mistyped, belong to a different country's register, or not exist — ask the counterparty to confirm it in writing.

    Should I use the Corporate Number or the company name?

    The Corporate Number. Names are duplicated across entities within a group; the number is unique to one entity.

    What is a KK (Kabushiki Kaisha)?

    KK (株式会社 / Kabushiki Kaisha) is Japan's standard joint-stock company, equivalent to a corporation. Minimum capital is ¥1. It's the most prestigious and common company form for medium to large businesses. Almost all listed Japanese companies are KK.

    People also ask about look up a company by its registration number in Japan

    The exact questions searchers type into Google — answered from the primary source.

    Is the Japan company register free to search?

    Yes. Basic company lookups on the gBizINFO / Legal Affairs Bureau are free — you can search by company name or registration number, view legal status, registered address and (usually) directors at no cost. Some jurisdictions charge a small fee only for downloading full filed documents.

    What is the official Japan business registry?

    The gBizINFO / Legal Affairs Bureau is the official public register of companies incorporated in Japan. It is operated by the government and is the primary source cited on this page — https://info.gbiz.go.jp.

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