SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
prepa-architecture.fr
SSL/TLS Certificate
SSL/TLS Certificate for prepa-architecture.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- prepa-architecture.fr
- Valid from
- Jun 18, 2026
- Valid until
- Sep 16, 2026 (40 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0544AD681D9FA51B18B6111AB099705510F7
- SHA-256 fingerprint
- 0C:1B:28:C0:C4:2D:58:7F:79:60:D4:AE:DE:58:0A:45:C6:D3:30:BF:FB:52:06:FE:3E:30:33:5E:BB:B3:C9:CC
- Chain
- YR2 → Root YR → ISRG Root X1
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 Jul 21, 2026.
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Uptime
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DNS changes
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TLS certificate
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