SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ksg-leipzig.de
SSL/TLS Certificate
SSL/TLS Certificate for ksg-leipzig.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.ksg-leipzig.de
- Valid from
- Jun 13, 2026
- Valid until
- Sep 11, 2026 (39 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05398277EB05B2A38A052FCE0537F9E9B1A4
- SHA-256 fingerprint
- 63:5B:D0:0F:DB:BC:60:B4:F5:C1:CD:F6:2F:FD:B8:40:8B:1D:7B:0F:1A:B8:F1:38:73:64:EB:BC:C3:81:76:E4
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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