SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
klaas-boergmann.de
SSL/TLS Certificate
SSL/TLS Certificate for klaas-boergmann.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- api.klaas-boergmann.de
- Valid from
- Apr 23, 2026
- Valid until
- Jul 22, 2026 (expired 47 days ago)
- Public key
- EC 256-bit
- Serial
- 063C7D4CFD52F376B6C08E27B03A47DF78EB
- SHA-256 fingerprint
- 42:88:BB:20:CC:FF:85:4A:5D:12:47:07:4E:97:33:70:EC:46:AD:6C:CC:65:08:22:A2:66:A9:8F:60:BA:B4:41
- Chain
- E7 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
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TLS certificate
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