leren.gvb.nlSSL Check Results
206
days expired
TLSv1.3
TLS_AES_128_GCM_SHA256
Let's Encrypt
4096 bits
06389A61B9EF78DB8A4F975A0589FD21F79C
2E:11:35:CA:6B:E2:F3:E7:C2:31:80:0D:71:D0:A5:69:CE:49:AC:6E
FD:97:79:B7:AE:75:BF:E1:69:61:54:59:4B:05:55:AC:A5:6A:7F:A4:9F:11:F7:BD:AE:50:71:39:9F:6A:4C:4C
Security Score
Fair security, improvements recommended
- 立即更新已过期的证书
- 检查证书链配置,确保证书正确签发
R11
206 days expired
Mar 19, 2025
Jun 17, 2025
Security Analysis
Secure
Secure
Want continuous monitoring?
Get instant alerts when certificates expire or encounter issues.
Certificate History
No historical data found
SSL Security Best Practices
Automate Renewals
Forgotten certificates cause downtime. Use Let's Encrypt or professional monitoring to automate the renewal process.
Use Strong Protocols
Always prefer TLS 1.3 or 1.2. Disable older, vulnerable protocols like SSL 3.0, TLS 1.0, and TLS 1.1 on your server.
Monitor Transparency
Keep an eye on Certificate Transparency (CT) logs to ensure no unauthorized certificates are issued for your domain.
Frequently Asked Questions
Everything you need to know about leren.gvb.nl's security status.
Q:When does leren.gvb.nl's SSL certificate expire?
leren.gvb.nl's certificate expires on June 17, 2025, which is in -206 days.
Q:Who issued the certificate for leren.gvb.nl?
It was issued by Let's Encrypt. This issuer is recognized by all major browsers.
Q:Is the connection to leren.gvb.nl safe?
Warning: The certificate has expired or is invalid. Use caution when sharing sensitive data.
Q:Can I monitor this domain for free?
Yes! You can register at GuardSSL to get automatic alerts before leren.gvb.nl's certificate expires, preventing any downtime.