SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
wide-tech.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for wide-tech.com.tw
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.wide-tech.com.tw
- Valid from
- Oct 6, 2026
- Valid until
- Jan 4, 2027 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06A03A71D5628BE8BE9B489B989689BC6641
- SHA-256 fingerprint
- D5:66:57:70:8D:CC:9E:59:92:DD:56:15:81:1E:9E:A9:74:A4:CD:4D:E5:63:64:FC:58:C2:3C:47:81:CF:EE:E6
- 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.
Never get surprised by wide-tech.com.tw's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch wide-tech.com.tw continuously, notifying you the moment anything moves across all three signals:
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, 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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