- Category
- Country code
- IANA type
- Country Code
- Country
- Australia
- Manager
- .au Domain Administration (auDA)
- Script
- Latin
- DS in root
- 1 record(s)
- Algorithm
- 8 · RSASHA256
- Second-level
- 31 suffixes
- IDN names
- no IDN tables at IANA
- WHOIS
- whois.auda.org.au
- RDAP
- yes
Checked 26 Oct 2026 by our weekly check.
Is a .au name registered?
Looked up from your browser in the registry's RDAP service; if that does not answer, in DNS. Nothing is stored on dnssec.in.What this means
The root zone holds a DS record for .au, so the extension is signed and anchored. A domain under .au can use DNSSEC with a full chain of trust: it needs to be signed at its DNS host and have its own DS at the registrar. .au is the country code for Australia; its registry sets who can register.
Second-level suffixes under .au (31)
You can register names directly under .au or under these suffixes, for example example.com.au. Some are restricted to certain users (government, education, banks). Source: the Public Suffix List.
- .act.au
- .act.edu.au
- .asn.au
- .catholic.edu.au
- .com.au
- .conf.au
- .edu.au
- .gov.au
- .id.au
- .net.au
- .nsw.au
- .nsw.edu.au
- .nt.au
- .nt.edu.au
- .org.au
- .oz.au
- .qld.au
- .qld.edu.au
- .qld.gov.au
- .sa.au
- .sa.edu.au
- .sa.gov.au
- .tas.au
- .tas.edu.au
- .tas.gov.au
- .vic.au
- .vic.edu.au
- .vic.gov.au
- .wa.au
- .wa.edu.au
- .wa.gov.au
IDN names under .au
No IDN tables for .au at IANA: names are usually ASCII only (a–z, 0–9 and hyphen).
Length
DNS limits are the same everywhere: each label is 1 to 63 characters, the whole name at most 253, letters, digits and hyphens, not starting or ending with a hyphen. IDN labels count their xn-- form, so fewer native characters fit. A registry can set a higher minimum (often 2 or 3 characters) or reserve short names: that is in its own policy.
WHOIS and RDAP
RDAP (the JSON successor to WHOIS) answers at https://rdap.cctld.au/rdap/. Classic WHOIS (port 43) answers at whois.auda.org.au.
Lifecycle and drop
Country code extensions set their own lifecycle: grace periods, redemption and release dates differ from country to country and are not covered by ICANN's gTLD policies.