SSL Certificate: open.feishu.de
🟢 Valid Certificate
| Common Name | open.feishu.de |
|---|---|
| Issuer | Sectigo Limited |
| Issuer CN | Sectigo Public Server Authentication CA DV R36 |
| Valid From | Aug 21 00:00:00 2025 GMT |
| Valid Until | Aug 21 23:59:59 2026 GMT (105 days left) |
| Serial Number | 70D8AD9F890A5C1E9069A2BD0EEA00F6 |
🌐 Subject Alternative Names (1)
ℹ️ About SSL Certificates
SSL (Secure Sockets Layer) certificates encrypt data between your browser and open.feishu.de's server. A valid SSL certificate ensures that your connection is private and that you're communicating with the real Open website.
Websites without valid SSL certificates may show browser warnings and are penalized in search engine rankings.
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