SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jaeminan-school.org
SSL/TLS Certificate
SSL/TLS Certificate for jaeminan-school.org
Expiring soon- Issued by (CA)
- Sectigo Limited
- Subject
- jaeminan-school.org
- Valid from
- Nov 17, 2025
- Valid until
- Nov 17, 2026 (11 days remaining)
- Public key
- RSA 2048-bit
- Serial
- FB93BD85D02EDDEA2BFBDA4B2E4F8296
- SHA-256 fingerprint
- 22:18:FF:DA:86:68:F3:6A:8E:63:5D:24:49:FE:DE:62:AC:5E:05:FC:29:4E:5C:52:F2:4E:CA:B1:F8:79:21:E2
- 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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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.
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