Defaults.Exposed › By TLD › .au
Is .au safe? The state of .au domain security — Australia
.au is safer than the internet average. Across 2,557,649 graded .au domains, 60.4% score an F — cleaner than the 73.8% global average — better company than most of the web. 3.3% earn a B or better. Most .au domains can still be impersonated in email, but the ending shifts the odds, not your own domain's grade. As of 2026-07-29.
Note: .au is used as a proxy for Australia based on the domain's TLD, not where the company is registered.
How do .au domains score?
Aggregate grade distribution across all graded .au domains — we never publish an individual business's grade. As of 2026-07-29.
| Grade | Domains | Share |
|---|---|---|
| A+ | 932 | 0% |
| A | 5,572 | 0.2% |
| B | 77,305 | 3% |
| C | 304,806 | 11.9% |
| D | 623,985 | 24.4% |
| F | 1,545,049 | 60.4% |
Does .au make a domain secure?
No — and that's the most important thing to know. A domain's grade is decided by how it is configured (SPF, DMARC, HTTPS, DNS), not by its ending. Choosing .au doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .au domain earns an A while the crowd around it sits at F.
Want to know where your .au domain ranks? Check it privately and free — we only ever show an individual domain's grade to its verified owner. Run the free check →
Frequently asked questions
Is .au safe?
On average, .au is safer than the internet average: 60.4% of its 2,557,649 graded domains score an F as of 2026-07-29, against a 73.8% global average. Most domains on every ending are exposed — the ending shifts the odds, not your own domain's grade.
How secure are .au domains?
39.6% of .au domains score above an F and 3.3% earn a B or better. The rest fail the basic externally observable protections, most importantly enforced SPF and DMARC, so they can be impersonated in email.
Does choosing .au make my domain secure?
No. A domain's grade comes from how it is configured — SPF, DMARC, HTTPS, DNS — not from its ending. A well-configured domain earns an A on any ending; an unconfigured one sits at F on .au too.
What does "grade F" mean for a .au domain?
It fails the basic protections we can observe from outside — above all, it has no enforced SPF and DMARC, so its email can be forged and its customers targeted with convincing fakes.
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