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 sgg.kr
Expired- Issued by (CA)
- Sectigo Limited
- Subject
- sgg.kr
- Valid from
- Jun 17, 2025
- Valid until
- Jun 22, 2026 (expired 61 days ago)
- Public key
- RSA 2048-bit
- Serial
- 12268968C6B6826DE17D9AE09AE22C32
- SHA-256 fingerprint
- 69:FD:E4:8D:95:BA:23:51:3B:FF:16:3B:69:3B:CF:BA:C6:35:A1:4F:25:3C:6D:D2:75:3A:53:CE:D4:B5:6F:DC
- Chain
- Sectigo RSA Domain Validation Secure Server CA → USERTrust RSA Certification Authority
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 sgg.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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