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SSL Certificate: dek.cz

🟢 Valid Certificate
Common Namedek.cz
IssuerLet's Encrypt
Issuer CNR13
Valid FromMay 23 22:33:48 2026 GMT
Valid UntilAug 21 22:33:47 2026 GMT (86 days left)
Serial Number0512C052296E12E9D8C7D2B4FFC54EB1DD7A
🌐 Subject Alternative Names (2)
ℹ️ About SSL Certificates

SSL (Secure Sockets Layer) certificates encrypt data between your browser and dek.cz's server. A valid SSL certificate ensures that your connection is private and that you're communicating with the real Dek website.

Websites without valid SSL certificates may show browser warnings and are penalized in search engine rankings.