SSL Certificate: lumen.sk

đŸŸĸ Valid Certificate
Common Namelumen.sk
IssuerLet's Encrypt
Issuer CNR13
Valid FromMar 14 08:58:49 2026 GMT
Valid UntilJun 12 08:58:48 2026 GMT (67 days left)
Serial Number06D8181D4C5686C3160AB59AF12E9663DB3D
🌐 Subject Alternative Names (2)
â„šī¸ About SSL Certificates

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

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