SSL/TLS Certificate Lookup

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

dupica.com

SSL/TLS Certificate

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SSL/TLS Certificate for dupica.com

Valid
Issued by (CA)
Let's Encrypt
Subject
*.dupica.com
Valid from
Jul 18, 2026
Valid until
Oct 16, 2026 (87 days remaining)
Public key
RSA 2048-bit
Serial
0567D46972B71826E4EA78CF25E44CCBF2E8
SHA-256 fingerprint
A0:6E:8E:AC:E0:4F:AA:42:CD:31:A8:CE:B5:6C:CD:30:EC:A6:B6:57:ED:44:A3:1D:B2:8E:AD:12:11:29:75:7E
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.dupica.com, dupica.com

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, pki.goog, sectigo.com).