SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bstechess.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for bstechess.co.kr
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- bstechess.co.kr
- Valid from
- Nov 25, 2025
- Valid until
- Dec 26, 2026 (103 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 840AEB07C74B7C1D0498BA14D6BCBEF6
- SHA-256 fingerprint
- 5F:0E:6A:F8:6C:09:C4:A2:97:E2:A5:BA:82:A0:85:65:1B:23:FC:BD:6C:6B:C2:7A:D7:D8:00:25:AC:1A:E2:0C
- 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
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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