SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ji-ying.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for ji-ying.com.tw
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ji-ying.com.tw
- Valid from
- Oct 24, 2026
- Valid until
- Jan 22, 2027 (75 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0521A42BD41F3363AF2C2BA68A6CE11CC563
- SHA-256 fingerprint
- 25:20:8A:F6:47:E6:0E:5B:0D:55:D1:91:6D:BC:0F:73:4C:1E:79:24:1E:0E:5F:D1:49:37:D5:61:B6:2F:B0:B0
- Chain
- YR1 → Root YR → ISRG Root X1
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 Nov 7, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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