SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for jy-polymer.com.tw

Valid
Issued by (CA)
Let's Encrypt
Subject
jy-polymer.com.tw
Valid from
Aug 18, 2026
Valid until
Nov 16, 2026 (74 days remaining)
Public key
RSA 2048-bit
Serial
06C90DBF03A057D1CC8CC643740B803BB771
SHA-256 fingerprint
31:08:25:3E:BF:04:0B:F3:5B:A9:01:51:BF:02:99:68:78:7C:B7:39:FB:9A:75:D0:F5:55:81:E7:AB:15:22:4B
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
jy-polymer.com.tw, www.jy-polymer.com.tw

Certificate Authority Authorization (CAA)

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

We've observed 1 previous certificate for this host. This certificate has been served since Aug 26, 2026.

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Uptime

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DNS changes

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TLS certificate

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