SSL/TLS Certificate Lookup

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

sestec.ch

SSL/TLS Certificate

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SSL/TLS Certificate for sestec.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
sestec.ch
Valid from
Jul 2, 2026
Valid until
Sep 30, 2026 (70 days remaining)
Public key
RSA 4096-bit
Serial
051BBC8BE130FDD833D6EEFAF4DB5F5E208E
SHA-256 fingerprint
87:F6:2D:BB:9A:B1:92:06:BA:50:70:30:B5:D9:47:C4:BF:06:A1:24:1F:C7:FA:AA:14:C6:57:06:26:28:84:BF
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
sestec.ch, www.sestec.ch

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.