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 buya.kr
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- hwarang.cdws.or.kr
- Valid from
- May 18, 2026
- Valid until
- Dec 2, 2026 (106 days remaining)
- Public key
- RSA 2048-bit
- Serial
- A587A659EB54F9CA274BAEA04B1CB83D
- SHA-256 fingerprint
- 30:5D:EF:B9:AD:27:60:6C:DC:E5:66:47:07:11:D2:ED:68:22:4F:13:05:4E:ED:46:44:B0:87:32:B1:CD:70:F6
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
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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