.au
| Introduced | 5 March 1986 |
|---|---|
| TLD type | Country code top-level domain |
| Status | Active |
| Registry | Various |
| Sponsor | .au Domain Administration (auDA) |
| Intended use | Entities connected with Australia |
| Actual use | Very popular in Australia |
| Registered domains | 4,138,919 (10 December 2022) |
| Registration restrictions | Limited to individuals, companies, and organisations located in Australia; different subdomains have various other restrictions. See .au Domain Administration Rules: Licensing (2019–01) |
| Structure | Names may be registered at the third level within generic second-level categories; direct second-level registration allowed from 24 March 2022 |
| Documents | IANA report on redelegation; ICANN registry agreement |
| Dispute policies | .au Dispute Resolution Policy (auDRP) (2016-01), .au Domain Administration Rules: Licensing (2019–01), Complaints Policy (2015-01), Complaints (Registrant Eligibility) Policy (2004-01) |
| DNSSEC | yes |
| Registry website | auDA; Afilias Australia |
.au is the Internet country code top-level domain (ccTLD) for Australia. It was created on 5 March 1986. Domain name policy is managed by .au Domain Administration (auDA). As of July 2018, the registry is operated by Afilias.