SSL/TLS Certificate Lookup

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

kosmobio.dk

SSL/TLS Certificate

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SSL/TLS Certificate for kosmobio.dk

Valid
Issued by (CA)
Let's Encrypt
Subject
kosmobio.dk
Valid from
Jun 20, 2026
Valid until
Sep 18, 2026 (58 days remaining)
Public key
RSA 4096-bit
Serial
057B6A21B8C61E46C36EA030FAF428BB82B7
SHA-256 fingerprint
6F:13:83:D6:B3:68:00:98:D4:5D:A9:60:2E:AE:D1:5D:C9:5D:B2:BE:DB:CD:AB:C2:84:BE:2C:95:33:89:D3:4F
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (3)
billet.kosmobio.dk, kosmobio.dk, www.kosmobio.dk

Certificate Authority Authorization (CAA)

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