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Is .whoswho safe? The state of .whoswho domain security
.whoswho is riskier than the internet average. Across 1,810 graded .whoswho domains, 99.8% score an F — worse than the 78.3% global average — heavier on exposed domains than the web as a whole. 0.1% earn a B or better. Most .whoswho 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 1,810 graded .whoswho domains, 99.8% earn an F — well above the 78.3% internet-wide average. Only 0% reach an A or A+ — the highest protection tier in the census.
How do .whoswho domains score?
Aggregate grade distribution across all graded .whoswho domains — we never publish an individual business's grade. As of 2026-08-16.
| Grade | Domains | Share |
|---|---|---|
| A+ | 0 | 0% |
| A | 0 | 0% |
| B | 1 | 0.1% |
| C | 2 | 0.1% |
| D | 1 | 0.1% |
| F | 1,806 | 99.8% |
Does .whoswho 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 .whoswho doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .whoswho domain earns an A while the crowd around it sits at F.
Want to know where your .whoswho 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 .whoswho safe?
On average, .whoswho is riskier than the internet average: 99.8% of its 1,810 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 .whoswho domains?
0.2% of .whoswho domains score above an F and 0.1% 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 .whoswho 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 .whoswho too.
What does "grade F" mean for a .whoswho 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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