Look up a company by number

    ACN number search (Australia)

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

    Search Company Records in Australia

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

    Reviewed by LemReveal Research TeamLast verified June 2026Primary source: ABR

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

    Enter the ACN to look up a Australia company directly on ABR. Unlike a name search, an ACN 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 ACN on the paperwork

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

    2. 2

      Search the ACN

      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 ABR

      For anything contractual, confirm the number against the primary source at https://abr.business.gov.au.

      https://abr.business.gov.au
    Open ABRAll Australia records

    Frequently asked questions

    What is a ACN in Australia?

    It is the identifier ABR 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 ACN lookup free?

    Yes. Looking up a company by ACN on ABR is free and requires no account.

    What if the ACN 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 ACN or the company name?

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

    What is an ABN?

    An Australian Business Number (ABN) is an 11-digit unique identifier issued to all entities registered in the Australian Business Register. It's used for tax, GST, and business-to-business transactions. You can search for any ABN for free at abr.business.gov.au.

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

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

    Is the Australia company register free to search?

    Yes. Basic company lookups on the ASIC / Australian Business Register 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 Australia business registry?

    The ASIC / Australian Business Register is the official public register of companies incorporated in Australia. It is operated by the government and is the primary source cited on this page — https://abr.business.gov.au.

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