SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
1a-krankenkasse.de
SSL/TLS Certificate
SSL/TLS Certificate for 1a-krankenkasse.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 1a-krankenkasse.de
- Valid from
- Sep 18, 2026
- Valid until
- Dec 17, 2026 (45 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0571BBAF740ABD14732DA3D0861F55CEADDB
- SHA-256 fingerprint
- 83:2F:5D:F9:11:CD:D5:2F:1E:CB:1C:84:DB:FC:17:8A:68:9C:3F:DD:6C:81:3F:0F:52:84:8B:AD:BD:F0:21:FA
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 22, 2026.
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Uptime
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DNS changes
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TLS certificate
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