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
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.