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SSL Certificate: calvin.edu

🟢 Valid Certificate
Common Namecalvin.edu
IssuerLet's Encrypt
Issuer CNR13
Valid FromMay 17 12:28:21 2026 GMT
Valid UntilAug 15 12:28:20 2026 GMT (31 days left)
Serial Number0670D2A52A2DCE24F607E9BD8891348EFB3A
🌐 Subject Alternative Names (1)
ℹ️ About SSL Certificates

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

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