SSL Certificate: grade.sfedu.ru
🟢 Valid Certificate
| Common Name | *.sfedu.ru |
|---|---|
| Issuer | GlobalSign nv-sa |
| Issuer CN | GlobalSign GCC R6 AlphaSSL CA 2025 |
| Valid From | Jun 16 11:53:27 2025 GMT |
| Valid Until | Jul 18 11:53:26 2026 GMT (48 days left) |
| Serial Number | 29E0A7200EBD023820F6BD6B |
🌐 Subject Alternative Names (2)
*.sfedu.rusfedu.ru
ℹ️ About SSL Certificates
SSL (Secure Sockets Layer) certificates encrypt data between your browser and grade.sfedu.ru's server. A valid SSL certificate ensures that your connection is private and that you're communicating with the real Grade website.
Websites without valid SSL certificates may show browser warnings and are penalized in search engine rankings.
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