SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sjtest.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for sjtest.co.kr
Self-signed- Issued by (CA)
- SomeOrganization
- Subject
- sys12.sysauto.co.kr
- Valid from
- Apr 30, 2021
- Valid until
- Apr 30, 2022 (expired 1626 days ago)
- Public key
- RSA 2048-bit
- Serial
- 59D3
- SHA-256 fingerprint
- A4:4C:88:00:51:9B:60:1C:59:42:B2:B1:68:6E:FA:48:54:5C:F8:04:B1:6E:B6:63:88:D4:87:78:62:5E:B0:BA
- Chain
- —
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 17, 2026.
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Uptime
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DNS changes
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TLS certificate
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