SSL/TLS Certificate Lookup

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

rpt.com.tw

SSL/TLS Certificate

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SSL/TLS Certificate for rpt.com.tw

Valid
Issued by (CA)
Let's Encrypt
Subject
mail.rpt.com.tw
Valid from
May 20, 2026
Valid until
Aug 18, 2026 (27 days remaining)
Public key
RSA 2048-bit
Serial
061D23A7D3FABDFA7E3551FEBA6FD047F140
SHA-256 fingerprint
AA:35:B7:81:9A:97:A2:C0:C2:77:C8:84:28:BA:99:E0:B3:4F:8E:A5:CF:E2:F3:45:EB:D8:91:F0:D3:9E:6A:D3
Chain
R12 → ISRG Root X1
Subject Alternative Names (3)
mail.rpt.com.tw, rpt.com.tw, www.rpt.com.tw

Certificate Authority Authorization (CAA)

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