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 isi.dk

Valid
Issued by (CA)
Let's Encrypt
Subject
www.isi.dk
Valid from
Jul 16, 2026
Valid until
Oct 14, 2026 (85 days remaining)
Public key
RSA 2048-bit
Serial
05987D554FA82441F8208BCA268F7EEE0C5D
SHA-256 fingerprint
58:DD:A6:F3:24:03:DB:4C:80:E8:19:23:8E:95:95:89:CC:00:76:C5:81:FE:6D:87:5E:48:27:13:73:63:35:7D
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
isi.dk, www.isi.dk

Certificate Authority Authorization (CAA)

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