Defaults.Exposed › By TLD › .blue
Is .blue safe? The state of .blue domain security
.blue is about average for the internet. Across 12,812 graded .blue domains, 72.7% score an F — roughly in line with the 73.8% global average. 2.8% earn a B or better. Most .blue 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 .blue domains score?
Aggregate grade distribution across all graded .blue domains — we never publish an individual business's grade. As of 2026-07-29.
| Grade | Domains | Share |
|---|---|---|
| A+ | 11 | 0.1% |
| A | 36 | 0.3% |
| B | 316 | 2.5% |
| C | 993 | 7.8% |
| D | 2,137 | 16.7% |
| F | 9,319 | 72.7% |
Does .blue 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 .blue doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .blue domain earns an A while the crowd around it sits at F.
Want to know where your .blue 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 .blue safe?
On average, .blue is about average for the internet: 72.7% of its 12,812 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 .blue domains?
27.3% of .blue domains score above an F and 2.8% 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 .blue 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 .blue too.
What does "grade F" mean for a .blue 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: .realestate · .gold · .st · .stream · .fitness · .ooo · Rankings
Most & least secure TLDs → · Check your domain → · How we grade →