SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
adoma-os.cz
SSL/TLS Certificate
SSL/TLS Certificate for adoma-os.cz
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- www.adoma-os.cz
- Valid from
- Feb 15, 2023
- Valid until
- May 16, 2023 (expired 1277 days ago)
- Public key
- RSA 2048-bit
- Serial
- 04B07B1F5758CA793C6FE230E10E3F994A5A
- SHA-256 fingerprint
- 8E:79:35:A8:04:29:AA:45:C7:5B:A9:25:D7:30:02:F4:21:2A:89:5B:31:4A:CD:14:70:D8:1F:4B:4F:32:6F:66
- Chain
- R3 → 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 16, 2026.
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TLS certificate
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