SSL/TLS Certificate Lookup

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

duncanlong.com

SSL/TLS Certificate

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SSL/TLS Certificate for duncanlong.com

Valid
Issued by (CA)
Let's Encrypt
Subject
mail.duncanlong.com
Valid from
Jul 14, 2026
Valid until
Oct 12, 2026 (83 days remaining)
Public key
EC 384-bit
Serial
05827876425ECD2ADD5585C106FB8CF72B29
SHA-256 fingerprint
4A:B9:4F:75:0E:44:17:B3:B9:30:B7:01:2D:9C:3F:54:7D:A5:68:2B:4C:9A:38:AD:C5:1B:74:C5:40:88:08:22
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (4)
duncanlong.com, mail.duncanlong.com, webmail.duncanlong.com, www.duncanlong.com

Certificate Authority Authorization (CAA)

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