SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sfd-kassel.de
SSL/TLS Certificate
SSL/TLS Certificate for sfd-kassel.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sfd-kassel.de
- Valid from
- Jul 22, 2026
- Valid until
- Oct 20, 2026 (81 days remaining)
- Public key
- EC 256-bit
- Serial
- 056B1A740BCC0048C55391DA581898C3D528
- SHA-256 fingerprint
- 07:79:5A:30:D1:C9:66:37:D8:23:38:02:3B:F3:40:EB:D3:65:A9:A3:8E:31:DD:7E:65:FE:7F:9F:FF:11:74:1C
- Chain
- YE1 → Root YE → ISRG Root X2 → 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
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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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