.au is the country code top‑level domain (ccTLD) for Australia. It is widely used by Australian businesses, organisations, and individuals to signal a local presence and build trust with Australian customers. Registrations are generally limited to entities with an Australian address or trademark, and the namespace includes popular second‑level domains such as .com.au for commercial sites, .net.au for network providers, and .org.au for non‑profits.
Because .au instantly conveys an Australian identity, many well‑known brands and media outlets choose it for their web addresses – for example, abc.net.au, news.com.au and the government portal australia.gov.au. The domain is also favoured for creative hacks, such as “pian.au” for a piano‑related site, leveraging the “au” suffix as a short, memorable ending.
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