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Australia ABN Generator

Australian Business Number — 11 digits, weighted check on (d1-1) and rest.

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Bulk:

⚠️ For development & testing only. Generated numbers pass format/checksum validation but are NOT registered with any government authority. Using a number to impersonate a real person or commit fraud is illegal.

About ABN

ABN (Australian Business Number) — Australian Business Number — 11 digits, weighted check on (d1-1) and rest.

Example: 51824753556

FAQ

What is ABN?

Australian Business Number for trading.

Format?

XX XXX XXX XXX (11 digits). Subtract 1 from first digit, weighted sum mod 89 = 0.

Use?

Format-valid only.

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