When you choose a website address for your Australian business, the ending matters more than most people expect. The letters after the dot tell customers what kind of organisation you are, and in Australia they also come with rules about who can register them. If you are setting up a new domain, or checking that the one you already hold is still on solid ground, this guide explains the options in plain English.
Australia has several domain endings, each run under licensing rules set by auDA, the organisation that administers the .au namespace. The ending you can register depends on your legal structure and how the name you want connects to your business or activity:
Most Australian businesses register a .com.au because it is the address customers expect to see on a sign, a business card or an email footer. To hold one you need a commercial entity, such as a business registered with an ABN or a company with an ACN, and the name must match or be closely connected to your registered business name, company name or Australian trade mark.
The practical effect is simple: a business trading as Coastal Cleaning Pty Ltd can register coastalcleaning.com.au, but it cannot register a name belonging to an unrelated business. Your ABN details and your domain need to tell the same story, because both are checked against auDA rules at registration and can be reviewed later.
The .net.au ending also requires a commercial entity, and the name must match your registered details in the same way. It was traditionally aimed at network and technology providers, but any eligible business can use it. If your first-choice .com.au is already taken by someone else, a .net.au version can work as an alternative, even though most customers will still look for the .com.au version first.
The .org.au ending is different because it is reserved for non-profit organisations and incorporated associations. That makes it a good fit for a charity, a community group or a sporting club that does not hold a business ABN but still wants a credible Australian web address of its own.
The .au direct namespace opened in 2021, allowing shorter addresses such as yourbusiness.au without the com or net in the middle. Eligibility is broader: you need a verifiable Australian connection, which can be citizenship, residency, or a business presence with an active ABN or ACN.
Existing holders of longer .au names had first access during the launch period, and the shorter names have been available on the open market since. Many businesses keep their .com.au as the main address and also register the matching .au name so nobody else can take it, then point the shorter version to the same website. A few dollars a year can save a lot of confusion later.
Australian domain eligibility is not a once-only check. auDA can review registrations at any time, and since May 2026 registrars are required to verify that the ABN or ACN linked to a domain is still current and active when that domain comes up for renewal.
This matters more than business owners realise. If you restructured and cancelled an old ABN, that number will no longer pass the check, and your renewal can be blocked, which eventually puts the domain at risk of deletion. It is worth reviewing your details once a year: look up your domain on the auDA WHOIS service, confirm the ABN or ACN shown there matches the one that is active today, and fix any mismatch with your domain provider well before the renewal window closes.
Start with the ending your customers expect: .com.au for almost every business, .org.au for a not-for-profit, and .id.au or .au direct for a personal site. Then check whether your exact business name is available, along with the common variations customers might type.
If the .com.au you want is held by an unrelated party, weigh up whether a .net.au or .au version is worth using, or whether a small change to the name is cleaner. Register only the versions you genuinely need, and point any extras at your main website so a confusingly similar address cannot be used against you later.
A domain is a small decision with long-term consequences, and it does not need to be complicated. If you are unsure which ending you qualify for, or whether the details on your current domain are still correct, your hosting provider can check availability, walk you through the eligibility rules and keep your renewals on track. The Hosting Australia team helps Australian small businesses with domain registration every day, so contact us if you would like a hand.
