SSL Certificate: jon.cz

đŸŸĸ Valid Certificate
Common Namejon.cz
IssuerLet's Encrypt
Issuer CNR12
Valid FromMar 2 01:02:08 2026 GMT
Valid UntilMay 31 01:02:07 2026 GMT (57 days left)
Serial Number0501AEA67C970BDF652AF7AD5D62FE79180D
🌐 Subject Alternative Names (2)
â„šī¸ About SSL Certificates

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

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