SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
klassen-it.de
SSL/TLS Certificate
SSL/TLS Certificate for klassen-it.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- klassen-it.de
- Valid from
- Aug 2, 2026
- Valid until
- Oct 31, 2026 (83 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 051F715FC05D5D8D4645AF0DA96F793E7095
- SHA-256 fingerprint
- C7:A0:72:A8:9C:B9:2A:F6:B2:50:EA:37:D3:41:81:F3:FE:4F:E3:62:84:6F:4C:6D:84:C3:01:41:39:DD:40:19
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 22, 2026.
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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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