SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
han-long.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for han-long.com.tw
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.han-long.com.tw
- Valid from
- Sep 26, 2026
- Valid until
- Dec 25, 2026 (48 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05CAE6F73F16499E0D345F50C77CE7A34558
- SHA-256 fingerprint
- 15:13:ED:57:20:F2:19:D2:7F:B8:1E:57:94:C6:66:5D:0E:C0:D1:57:C0:0A:90:76:A5:2D:A8:6A:94:B4:02:FD
- 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 20, 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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