SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cfd-school.de
SSL/TLS Certificate
SSL/TLS Certificate for cfd-school.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- server1.infomails.de
- Valid from
- Jun 16, 2024
- Valid until
- Sep 14, 2024 (expired 685 days ago)
- Public key
- RSA 2048-bit
- Serial
- 04CAE94CB7AC368F4B76C7A20DBF269649D3
- SHA-256 fingerprint
- F6:31:35:7F:44:D9:68:D8:76:DC:BE:E7:32:3B:DD:0C:FC:A9:9C:C0:CC:03:15:E0:B5:87:43:02:67:7D:54:72
- Chain
- R10 → 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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