SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
leibnitz-kommunikation.de
SSL/TLS Certificate
SSL/TLS Certificate for leibnitz-kommunikation.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- leibnitz-kommunikation.de
- Valid from
- Oct 20, 2026
- Valid until
- Jan 18, 2027 (67 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 051C71CF0DF1D8569581080D5DBD18BF93DA
- SHA-256 fingerprint
- F9:B3:6F:34:9A:D9:C3:F2:17:CD:6A:3D:FC:80:F1:30:CA:70:53:A1:6F:AB:74:37:34:93:21:F6:AA:05:18:6D
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 26, 2026.
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Uptime
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DNS changes
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TLS certificate
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