Defaults.Exposed › By TLD › .sl
Is .sl safe? The state of .sl domain security
Partial dataset — .sl is still being processed; figures firm up in the next edition.
.sl is safer than the internet average. Across 580 graded .sl domains, 54.3% score an F — cleaner than the 78.3% global average — better company than most of the web. 4.3% earn a B or better. Most .sl domains can still be impersonated in email, but the ending shifts the odds, not your own domain's grade. As of 2026-08-16.
How do .sl domains score?
Aggregate grade distribution across all graded .sl domains — we never publish an individual business's grade. As of 2026-08-16.
| Grade | Domains | Share |
|---|---|---|
| A+ | 0 | 0% |
| A | 6 | 1% |
| B | 19 | 3.3% |
| C | 91 | 15.7% |
| D | 149 | 25.7% |
| F | 315 | 54.3% |
Does .sl 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 .sl doesn't protect you, and a high-F-share ending doesn't doom you: a correctly configured .sl domain earns an A while the crowd around it sits at F.
Want to know where your .sl 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 .sl safe?
On average, .sl is safer than the internet average: 54.3% of its 580 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 .sl domains?
45.7% of .sl domains score above an F and 4.3% 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 .sl 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 .sl too.
What does "grade F" mean for a .sl 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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