Defaults.Exposed › By TLD › .rio
Is .rio safe? The state of .rio domain security
.rio is about average for the internet. Across 765 graded .rio domains, 75.9% score an F — roughly in line with the 78.3% global average. 2.1% earn a B or better. Most .rio domains can still be impersonated in email, but the ending shifts the odds, not your own domain's grade. As of 2026-08-16.
Of 765 graded .rio domains, 75.9% earn an F — below the 78.3% internet-wide average. Only 0% reach an A or A+ — the highest protection tier in the census.
How do .rio domains score?
Aggregate grade distribution across all graded .rio domains — we never publish an individual business's grade. As of 2026-08-16.
| Grade | Domains | Share |
|---|---|---|
| A+ | 0 | 0% |
| A | 0 | 0% |
| B | 16 | 2.1% |
| C | 65 | 8.5% |
| D | 103 | 13.5% |
| F | 581 | 75.9% |
Does .rio 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 .rio doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .rio domain earns an A while the crowd around it sits at F.
Want to know where your .rio 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 .rio safe?
On average, .rio is about average for the internet: 75.9% of its 765 graded domains score an F as of 2026-08-16, against a 78.3% global average. Most domains on every ending are exposed — the ending shifts the odds, not your own domain's grade.
How secure are .rio domains?
24.1% of .rio domains score above an F and 2.1% 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 .rio 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 .rio too.
What does "grade F" mean for a .rio 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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