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Is .build safe? The state of .build domain security
.build is safer than the internet average. Across 10,694 graded .build domains, 73.3% score an F — cleaner than the 78.3% global average — better company than most of the web. 3.1% earn a B or better. Most .build 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 9,605 graded .build domains, 67.1% earn an F — well below the 73.8% internet-wide average. DMARC enforcement here stands at 20.5% — above the 11.8% census-wide rate.
How do .build domains score?
Aggregate grade distribution across all graded .build domains — we never publish an individual business's grade. As of 2026-08-16.
| Grade | Domains | Share |
|---|---|---|
| A+ | 6 | 0.1% |
| A | 27 | 0.3% |
| B | 296 | 2.8% |
| C | 940 | 8.8% |
| D | 1,583 | 14.8% |
| F | 7,842 | 73.3% |
Does .build 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 .build doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .build domain earns an A while the crowd around it sits at F.
Want to know where your .build 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 .build safe?
On average, .build is safer than the internet average: 73.3% of its 10,694 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 .build domains?
26.7% of .build domains score above an F and 3.1% 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 .build 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 .build too.
What does "grade F" mean for a .build 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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