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How to verify Australia Business Number?

ABN search on Austrailian Business Register

You can check the validity of an ABN from the Austrailian Business Register Website for free. You can access the ABN lookup service here. Using this tool you can search for a company by ABN, ACN or name. Advanced search options are available here

ABN lookup
ABN lookup

Example : 49160299865

The search returns the following details

  • Entity name
  • ABN status
  • Entity type
  • Registration status for Goods & Services Tax (GST)
  • Main business location
ABN verification status
ABN verification status

How to verify format of ABN?

Australia Business Number consists of 11 digits

Regex expressionsDescription
\b\d{2}\.\d{3}\.\d{3}\.\d{3}\bMatches a 11-digit number of the format NN.NNN.NNN.NNN delimited by dot.
\b\d{2}-\d{3}-\d{3}-\d{3}\bMatches a 11-digit number of the format NN-NNN-NNN-NNN delimited by hyphen.
\b\d{2} \d{3} \d{3} \d{3}\bMatches a 11-digit number of the format NN NNN NNN NNN delimited by space.
\b\d{11}\bMatches a 11-digit number without a delimiter.

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