ABN Lookup is the public view of the Australian Business Register (ABR). It provides access to publicly available information supplied by businesses when they register for an Australian Business Number (ABN).
The ABN Lookup tools may assist with multiple searches.
Update your ABN details
It is essential your ABN details are kept up-to-date. Many agencies across all levels of government rely on ABN information to target and provide important community services.
Tell us within 28 days if your business operation ceases or if your details change. Your ABN may be cancelled if information shows you are no longer carrying on a business.
To update your ABN details go to abr.gov.au 
.