SSL/TLS Certificate Lookup

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

csf.si

SSL/TLS Certificate

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SSL/TLS Certificate for csf.si

Valid
Issued by (CA)
Let's Encrypt
Subject
*.csf.si
Valid from
Jun 27, 2026
Valid until
Sep 25, 2026 (67 days remaining)
Public key
RSA 2048-bit
Serial
059AF26F53776FC4404CA92BBE6DC427F0B5
SHA-256 fingerprint
49:E3:9E:8F:3D:25:DB:BC:77:A6:D4:92:38:3A:E9:7A:9C:23:27:78:B7:D6:9A:F0:0E:C7:3C:9C:4B:35:4A:E3
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.csf.si, csf.si

Certificate Authority Authorization (CAA)

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