SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for jmnf.kr
Expired- Issued by (CA)
- Sectigo Limited
- Subject
- jmnf.kr
- Valid from
- Aug 8, 2025
- Valid until
- Aug 13, 2026 (expired 5 days ago)
- Public key
- RSA 2048-bit
- Serial
- 3F4185CFD6D4B62754870A9D402F380A
- SHA-256 fingerprint
- 35:8E:2E:05:13:81:D3:0E:F3:DC:50:66:AF:69:7A:BC:34:E4:FD:4C:20:8D:B9:9C:D8:C7:A4:C0:80:20:4F:E5
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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