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 design-science.or.kr

Valid
Issued by (CA)
Amazon
Subject
pltaxa.or.kr
Valid from
Jun 7, 2026
Valid until
Dec 21, 2026 (80 days remaining)
Public key
RSA 2048-bit
Serial
09B2098B86CC36888BCBDA9DA11EF4DB
SHA-256 fingerprint
5C:B7:0F:72:0C:0F:2F:89:AA:87:71:63:78:19:51:F8:8C:50:03:A4:69:CC:20:FA:C7:C8:BC:BF:74:E3:15:C2
Chain
Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Subject Alternative Names (10)
*.cakoll.or.kr, *.kalpa.or.kr, cakoll.or.kr, design-science.or.kr, kalpa.or.kr, ksp.or.kr, pltaxa.or.kr, www.design-science.or.kr, www.ksp.or.kr, www.pltaxa.or.kr

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by design-science.or.kr's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch design-science.or.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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.