Defaults.Exposed › By TLD › .aero
Is .aero safe? The state of .aero domain security
.aero is safer than the internet average. Across 11,838 graded .aero domains, 57.5% score an F — cleaner than the 73.8% global average — better company than most of the web. 4.9% earn a B or better. Most .aero domains can still be impersonated in email, but the ending shifts the odds, not your own domain's grade. As of 2026-07-29.
How do .aero domains score?
Aggregate grade distribution across all graded .aero domains — we never publish an individual business's grade. As of 2026-07-29.
| Grade | Domains | Share |
|---|---|---|
| A+ | 19 | 0.2% |
| A | 56 | 0.5% |
| B | 502 | 4.2% |
| C | 1,710 | 14.4% |
| D | 2,740 | 23.1% |
| F | 6,811 | 57.5% |
Does .aero 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 .aero doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .aero domain earns an A while the crowd around it sits at F.
Want to know where your .aero 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 .aero safe?
On average, .aero is safer than the internet average: 57.5% of its 11,838 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 .aero domains?
42.5% of .aero domains score above an F and 4.9% 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 .aero 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 .aero too.
What does "grade F" mean for a .aero 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.
By TLD: .tours · .frl · .properties · .pub · .cards · .wales · Rankings
Most & least secure TLDs → · Check your domain → · How we grade →