SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for ching-win.com.tw

Valid
Issued by (CA)
Google Trust Services
Subject
ching-win.com.tw
Valid from
Jul 13, 2026
Valid until
Oct 11, 2026 (80 days remaining)
Public key
EC 256-bit
Serial
43F7A99BE674CDCE0E316A8E9272F5ED
SHA-256 fingerprint
DF:1A:85:2B:FB:2C:75:30:8E:CE:DD:33:E5:92:C9:FA:FA:2E:4D:91:51:3A:60:97:09:1F:F2:B6:29:F3:7F:78
Chain
WE1 → GTS Root R4
Subject Alternative Names (2)
*.ching-win.com.tw, ching-win.com.tw

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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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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