SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kochschule-ruhrgebiet.de
SSL/TLS Certificate
SSL/TLS Certificate for kochschule-ruhrgebiet.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kochschule-ruhrgebiet.de
- Valid from
- Nov 5, 2026
- Valid until
- Feb 3, 2027 (80 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 065549FBE48E8B8AB87A767B4184749BA7FB
- SHA-256 fingerprint
- 63:A8:C5:6F:29:3F:01:01:59:93:18:B0:B6:1F:DE:43:34:C7:6B:0C:C4:26:43:AC:EE:9C:E4:5C:B1:F3:D1:EF
- 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 Sep 27, 2026.
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TLS certificate
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