SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sto.or.kr
SSL/TLS Certificate
SSL/TLS Certificate for sto.or.kr
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- *.sto.or.kr
- Valid from
- Feb 20, 2026
- Valid until
- Mar 24, 2027 (200 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6E694F1C7BF3A480D11A7D6E
- SHA-256 fingerprint
- 05:2F:DD:67:B1:4E:FC:6B:A7:D7:1F:E6:FE:3D:5E:22:6F:28:61:81:2A:FB:DB:0A:1B:6E:2B:0C:62:E1:1E:9D
- Chain
- GlobalSign GCC R3 DV TLS CA 2020 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch sto.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.
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