SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for simel-electricite.fr

Untrusted chain
Issued by (CA)
Synology Inc.
Subject
synology
Valid from
May 1, 2026
Valid until
May 2, 2027 (284 days remaining)
Public key
RSA 2048-bit
Serial
1644112998B7BE
SHA-256 fingerprint
36:E6:C0:4D:FC:78:15:50:16:81:D5:AD:48:31:3A:47:A3:E0:99:92:0A:84:85:A5:47:8F:EE:91:24:32:63:4D
Chain
Subject Alternative Names (1)
synology

Certificate Authority Authorization (CAA)

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TLS certificate

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