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Is .mu safe? The state of .mu domain security — Mauritius
.mu is safer than the internet average. Across 9,770 graded .mu domains, 54.8% score an F — cleaner than the 78.3% global average — better company than most of the web. 3.5% earn a B or better. Most .mu domains can still be impersonated in email, but the ending shifts the odds, not your own domain's grade. As of 2026-08-16.
In the .mu zone — covering Mauritius — 46.3% of 7,655 graded domains earn an F, well below the 73.8% internet-wide average. Only 0.3% reach an A or A+ — the highest protection tier in the census.
Note: .mu is used as a proxy for Mauritius based on the domain's TLD, not where the company is registered.
How do .mu domains score?
Aggregate grade distribution across all graded .mu domains — we never publish an individual business's grade. As of 2026-08-16.
| Grade | Domains | Share |
|---|---|---|
| A+ | 0 | 0% |
| A | 24 | 0.2% |
| B | 316 | 3.2% |
| C | 1,453 | 14.9% |
| D | 2,626 | 26.9% |
| F | 5,351 | 54.8% |
Does .mu 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 .mu doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .mu domain earns an A while the crowd around it sits at F.
Want to know where your .mu 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 .mu safe?
On average, .mu is safer than the internet average: 54.8% of its 9,770 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 .mu domains?
45.2% of .mu domains score above an F and 3.5% 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 .mu 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 .mu too.
What does "grade F" mean for a .mu 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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