SSL/TLS Certificate Lookup

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

utek.com.tw

SSL/TLS Certificate

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SSL/TLS Certificate for utek.com.tw

Valid
Issued by (CA)
Let's Encrypt
Subject
utek.com.tw
Valid from
Jul 21, 2026
Valid until
Oct 19, 2026 (89 days remaining)
Public key
RSA 2048-bit
Serial
053B5C25F4BF7C3BA02BA1EB3F19A089853C
SHA-256 fingerprint
D3:62:87:21:CE:56:4C:8B:51:2E:63:8F:68:FF:EB:F9:91:DB:14:93:5A:AA:3C:9D:0C:66:8A:78:88:F9:22:CB
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.utek.com.tw, utek.com.tw

Certificate Authority Authorization (CAA)

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