SSL/TLS Certificate Lookup

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

sini.pt

SSL/TLS Certificate

SSL/TLS Certificate for sini.pt

Valid

Issued by (CA): Let's Encrypt
Subject: sini.pt
Valid from: Jun 27, 2026
Valid until: Sep 25, 2026 (65 days remaining)
Public key: RSA 2048-bit
Serial: 057C1D4E0BAB8CFF4A835D76FB5E3D5C3D42
SHA-256 fingerprint: 06:B1:02:3B:05:F2:CD:24:A5:EF:ED:C7:DC:F9:DE:E6:7D:26:27:11:85:AD:1F:5C:DF:62:D5:1F:CD:1F:0D:5E
Chain: YR1 → Root YR → ISRG Root X1

Subject Alternative Names (3)

mail.sini.pt, sini.pt, webmail.sini.pt

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