SSL Certificate Test
Verify HTTPS certificate security and expiration
Result for: zhihu.com
Tested at: 2026-04-21 02:20:59
100
优秀
SSL Score: 100/100
🔒 Certificate Status
Certificate Valid
✓ Valid
Days Remaining
235 days
📋 Certificate Details
Subject
*.zhihu.com
Issuer
GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1
Certificate Type
Commercial
Valid From
2025-12-11 08:00:00
Valid To
2026-12-11 07:59:59
Signature Algorithm
RSA-SHA256
💡 Security Suggestions
SSL证书状态良好
证书有效期充足，SSL配置正常。