SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
yk-tech.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for yk-tech.com.tw
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.yk-tech.com.tw
- Valid from
- Sep 24, 2026
- Valid until
- Dec 23, 2026 (52 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 067CB05A44AF98FB6217108CDB5173F936A3
- SHA-256 fingerprint
- DE:63:1A:D2:08:96:3A:C7:3E:D1:8C:24:FE:3F:56:7D:BE:2A:05:F3:7F:2F:F2:A8:12:02:92:D7:95:21:C1:96
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 11, 2026.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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