SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ja-sing.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for ja-sing.com.tw
Valid- Issued by (CA)
- Google Trust Services
- Subject
- ja-sing.com.tw
- Valid from
- Oct 1, 2026
- Valid until
- Dec 30, 2026 (76 days remaining)
- Public key
- EC 256-bit
- Serial
- 9BF2F789B47C141C0EACECA7BF8D4A47
- SHA-256 fingerprint
- E4:B6:5E:32:23:04:B7:E2:80:8F:26:8D:57:8D:F7:21:CF:75:31:70:9F:6A:52:70:8B:8A:3A:D0:7F:62:50:43
- 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 Oct 9, 2026.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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