SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
k-admin.co.kr
SSL/TLS Certificate
SSL/TLS Certificate for k-admin.co.kr
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.k-admin.co.kr
- Valid from
- Sep 8, 2026
- Valid until
- Mar 26, 2027 (139 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6379CDD609A6D97DC93723A3
- SHA-256 fingerprint
- 30:4E:16:D2:D1:1B:49:74:75:3C:83:FC:B5:80:AD:E5:C4:17:5D:37:FA:D0:67:32:21:A0:51:38:9F:F9:B6:05
- Chain
- GlobalSign GCC R46 AlphaSSL CA 2025 → GlobalSign Root R46 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by k-admin.co.kr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch k-admin.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, CNAME, TXT 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.