SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
san-fa.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for san-fa.com.tw
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.san-fa.com.tw
- Valid from
- Aug 3, 2026
- Valid until
- Nov 1, 2026 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05BAAF5BD7D52E319C85D46BCE9D328A06E2
- SHA-256 fingerprint
- 12:E2:38:55:59:C4:1E:69:E9:04:BD:71:DB:A2:AE:2B:89:A6:85:AA:D8:0E:FF:AE:F0:36:FA:B9:B9:F6:45:6E
- 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.
This certificate has been served since Aug 5, 2026.
Never get surprised by san-fa.com.tw's certificate expiring
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME 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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