SSL/TLS Certificate Lookup

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

optikum.com

SSL/TLS Certificate

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SSL/TLS Certificate for optikum.com

Valid
Issued by (CA)
Let's Encrypt
Subject
optikum.com
Valid from
Jun 13, 2026
Valid until
Sep 11, 2026 (52 days remaining)
Public key
EC 256-bit
Serial
064141644A584F26706F58CC2C3B4058B0B3
SHA-256 fingerprint
6F:A1:4D:29:EA:6D:76:57:CE:2B:4E:FC:53:4D:2F:F2:9A:46:34:A3:A9:C3:9D:38:EC:A5:09:B0:76:7A:41:E5
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
*.optikum.com, optikum.com

Certificate Authority Authorization (CAA)

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