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How secure are Czechia's business domains?
Most businesses in Czechia use a .cz domain. Across 878,505 of them, here's how their security stacks up — aggregate patterns only, never an individual business. As of 2026-06-28.
We use .cz as a stand-in for Czechia, based on the domain's ending rather than where a company is legally registered — so a Czechia business on a generic ending like .com isn't counted here.
Grade distribution
| Grade | Domains | Share |
|---|---|---|
| A+ | 48 | 0% |
| A | 385 | 0% |
| B | 4,507 | 0.5% |
| C | 34,755 | 4% |
| D | 160,677 | 18.3% |
| F | 678,133 | 77.2% |
See exactly where your own Czechia domain ranks — free and private → Check your domain. Or browse .cz in detail and the most & least secure TLDs.