SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
seokyeong-univ.com
SSL/TLS Certificate
SSL/TLS Certificate for seokyeong-univ.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- cpanel.seokyeong-univ.com
- Valid from
- Sep 1, 2026
- Valid until
- Nov 30, 2026 (49 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05712D14D961DFF666D01CF9365FD587CEB8
- SHA-256 fingerprint
- 7F:0A:64:37:5C:BE:F6:2E:31:34:81:2A:F9:AE:D5:25:9A:E8:F6:C1:E9:B4:10:4F:09:2E:72:FE:09:5A:B6:08
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 26, 2026.
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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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