SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bs-tech.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for bs-tech.co.kr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bs-tech.co.kr
- Valid from
- Sep 5, 2026
- Valid until
- Dec 4, 2026 (59 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 056558A87C4AA4AAFDF2CF88D3CCFAD99FD0
- SHA-256 fingerprint
- C1:F6:0B:4F:BA:8A:72:BD:89:9F:36:4D:C8:BD:FA:4B:FB:93:58:B7:82:1F:8C:79:51:BE:4D:68:93:D7:92:C6
- 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.
This certificate has been served since Sep 8, 2026.
Never get surprised by bs-tech.co.kr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bs-tech.co.kr continuously, notifying you the moment anything moves across all three signals:
Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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