SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cs-student.fr
SSL/TLS Certificate
SSL/TLS Certificate for cs-student.fr
Valid- Issued by (CA)
- Gandi SAS
- Subject
- cs-student.fr
- Valid from
- Jun 4, 2026
- Valid until
- Dec 19, 2026 (82 days remaining)
- Public key
- EC 256-bit
- Serial
- 0497A9B82838DB2B07EACA16A7BCB329
- SHA-256 fingerprint
- E9:BF:E3:17:46:7D:BC:0C:29:C5:30:9A:EC:39:B8:B2:84:A3:5F:0A:7A:AF:82:6A:F5:22:77:FD:9A:E9:33:16
- Chain
- GandiCert → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 25, 2026.
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Uptime
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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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