SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
i-tek.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for i-tek.com.tw
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- www.i-tek.com.tw
- Valid from
- Oct 27, 2026
- Valid until
- Jan 25, 2027 (82 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 052EA3C72DC4C341ADC5464B8BB739B54E2D
- SHA-256 fingerprint
- 62:ED:68:9D:58:79:72:0C:D1:83:57:4A:9F:80:DF:E9:2C:FC:CE:C2:2E:FD:CB:73:1E:EA:AF:79:E9:15:80:13
- 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.
Never get surprised by i-tek.com.tw's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch i-tek.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.