SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kcg.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for kcg.co.kr
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- portal.kcg.co.kr
- Valid from
- Mar 9, 2026
- Valid until
- Mar 7, 2027 (211 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1168CAF065D2CC01B4EF863A60303814
- SHA-256 fingerprint
- 42:12:FE:3F:AC:AF:C2:18:A6:21:9C:CA:11:A7:50:43:58:ED:70:1E:0E:28:12:6B:00:59:D3:F0:15:A8:32:04
- 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.
This certificate has been served since Jul 29, 2026.
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This is today's certificate. Turn on monitoring and we'll watch kcg.co.kr continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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