SSL/TLS Certificate Lookup

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

alcyon.dk

SSL/TLS Certificate

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SSL/TLS Certificate for alcyon.dk

Valid
Issued by (CA)
Let's Encrypt
Subject
alcyon.dk
Valid from
May 25, 2026
Valid until
Aug 23, 2026 (32 days remaining)
Public key
EC 384-bit
Serial
06F88ECCE187D257B4A88FD3711B3AD6DA5B
SHA-256 fingerprint
5F:38:77:7D:7F:E6:6B:1C:3C:28:D7:27:ED:D3:BC:03:2E:D6:13:70:07:C5:C8:CC:48:ED:57:25:E5:88:F5:B6
Chain
E8 → ISRG Root X1
Subject Alternative Names (4)
alcyon.dk, ipv6.alcyon.dk, mail.alcyon.dk, www.alcyon.dk

Certificate Authority Authorization (CAA)

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