SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sio-rennes.fr
SSL/TLS Certificate
SSL/TLS Certificate for sio-rennes.fr
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sio-rennes.fr
- Valid from
- Sep 10, 2026
- Valid until
- Dec 9, 2026 (51 days remaining)
- Public key
- EC 256-bit
- Serial
- 061BD79B15A414AC1026266CD434AF73ADC4
- SHA-256 fingerprint
- 6D:48:65:27:8A:DC:FD:83:0B:97:91:E0:5D:00:BC:99:3E:48:3C:E8:49:F8:8D:BD:71:03:49:7C:5F:5B:60:56
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 Sep 27, 2026.
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Uptime
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DNS changes
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TLS certificate
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