Look up a company by number

    EIN number search (United States)

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

    Search Company Records in United States

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

    Reviewed by LemReveal Research TeamLast verified June 2026Primary source: SEC EDGAR

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

    Enter the EIN to look up a United States company directly on SEC EDGAR. Unlike a name search, an EIN 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 EIN on the paperwork

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

    2. 2

      Search the EIN

      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 SEC EDGAR

      For anything contractual, confirm the number against the primary source at https://www.sec.gov/edgar.

      https://www.sec.gov/edgar
    Open SEC EDGARAll United States records

    Frequently asked questions

    What is a EIN in United States?

    It is the identifier SEC EDGAR 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 EIN lookup free?

    Yes. Looking up a company by EIN on SEC EDGAR is free and requires no account.

    What if the EIN 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 EIN or the company name?

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

    How do I look up a US company?

    For public companies, search SEC EDGAR by company name to find filings like 10-K annual reports and 8-K material events. For private companies, you'll need to search the specific state's Secretary of State website where the company is incorporated.

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

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

    Is the United States company register free to search?

    Yes. Basic company lookups on the SEC EDGAR / State Registries 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 United States business registry?

    The SEC EDGAR / State Registries is the official public register of companies incorporated in United States. It is operated by the government and is the primary source cited on this page — https://www.sec.gov/edgar.

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