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 hirzel-optik.ch

Expired
Issued by (CA)
Let's Encrypt
Subject
hirzel-optik.ch
Valid from
Jan 17, 2026
Valid until
Apr 17, 2026 (expired 115 days ago)
Public key
RSA 2048-bit
Serial
067D869B47E6B030274B7344C24BDE2F0A38
SHA-256 fingerprint
D1:2F:B4:4F:5A:B1:55:B7:F0:8F:28:84:48:F2:DB:1C:07:E0:B0:92:C6:61:CF:5D:1C:14:D3:95:69:03:2D:F3
Chain
R13 → ISRG Root X1
Subject Alternative Names (3)
hirzel-optik.ch, webmail.hirzel-optik.ch, www.hirzel-optik.ch

Certificate Authority Authorization (CAA)

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

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TLS certificate

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