Defaults.Exposed › By TLD › .boo
Is .boo safe? The state of .boo domain security
.boo is riskier than the internet average. Across 5,425 graded .boo domains, 90.7% score an F — worse than the 73.8% global average — heavier on exposed domains than the web as a whole. 1.3% earn a B or better. Most .boo 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 .boo domains score?
Aggregate grade distribution across all graded .boo domains — we never publish an individual business's grade. As of 2026-07-29.
| Grade | Domains | Share |
|---|---|---|
| A+ | 8 | 0.1% |
| A | 11 | 0.2% |
| B | 54 | 1% |
| C | 167 | 3.1% |
| D | 265 | 4.9% |
| F | 4,920 | 90.7% |
Does .boo 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 .boo doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .boo domain earns an A while the crowd around it sits at F.
Want to know where your .boo 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 .boo safe?
On average, .boo is riskier than the internet average: 90.7% of its 5,425 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 .boo domains?
9.3% of .boo domains score above an F and 1.3% 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 .boo 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 .boo too.
What does "grade F" mean for a .boo 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: .fish · .dad · .army · .vlaanderen · .builders · .yokohama · Rankings
Most & least secure TLDs → · Check your domain → · How we grade →