LaunchrABN Lookup
Enter an 11-digit Australian Business Number and see who it actually belongs to — entity name, type, status, GST registration and state. Free, no sign-up, straight from the Australian Business Register.
What this tells you
Every result comes back with the details the register actually holds:
- Entity name — the legal name the ABN is registered to.
- Registered business names — the trading names operating under it, where any exist.
- Entity type — sole trader, private company, trust, partnership and so on.
- Status — active or cancelled, and the date that status took effect.
- GST — whether the business is registered, and from when.
- Location — the state and postcode on the register.
- ACN — for companies, the matching Australian Company Number.
How it works, and what it can’t do
The number is checked twice. First against the ATO’s weighted checksum, which is pure arithmetic — a mistyped ABN fails instantly, without troubling anyone’s servers. If it passes, we ask the Australian Business Register directly and show you exactly what it returns.
Being straight about the limits. This reads the public register — nothing more. An active ABN means a business is registered; it is not evidence that a business is solvent, insured, licensed, reputable, or the party you are actually dealing with. For licences and insurance, check the relevant state regulator. The register is the source of truth here, and if it is out of date, so are we.
Common questions
Is this free?
Yes. No sign-up, no email, no limit worth mentioning. The Australian Business Register publishes this data and we are simply presenting it.
Why does a valid-looking ABN come back as not found?
An ABN can pass the checksum and still not exist — the checksum only proves the digits are internally consistent, not that the number was ever issued. If the register has no record, that is your answer.
What does “cancelled” mean?
The ABN was issued but is no longer active. The business may have closed, restructured, or simply let it lapse. The record stays visible, which is why you can still look it up.
Can I look up a business by name instead?
Not here — this tool takes the number. For name searches, use the ABR’s own ABN Lookup.
Why a software company runs an ABN tool
We build and repair software for Australian small businesses, and almost every job we take needs an ABN checked at some point — onboarding a client, wiring up an invoice, validating a signup form. We built this for ourselves first. It is free because it costs us almost nothing to keep running.
If you have an app that needs this sort of thing built properly — or one that is half-finished and stuck — that is the actual job we do.
Already have something built that doesn’t work? We fix AI-built apps. Half-finished? We finish them.