SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sayit.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for sayit.com.tw
Valid- Issued by (CA)
- Google Trust Services
- Subject
- sayit.com.tw
- Valid from
- Sep 2, 2026
- Valid until
- Dec 1, 2026 (47 days remaining)
- Public key
- EC 256-bit
- Serial
- 754A573D56D5F7EC138933F4FA8CD12A
- SHA-256 fingerprint
- 80:D9:84:21:AE:01:88:4F:47:4C:50:42:D0:56:81:E6:6A:B4:85:68:0B:FA:03:C5:F8:15:95:BB:47:EE:55:7A
- Chain
- WE1 → GTS Root R4
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 Sep 4, 2026.
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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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