SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
scietech-hk.com
SSL/TLS Certificate
SSL/TLS Certificate for scietech-hk.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- scietech-hk.com
- Valid from
- Jul 30, 2026
- Valid until
- Oct 28, 2026 (25 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053879C4B02D58240CC5D7010E309F16965C
- SHA-256 fingerprint
- 05:5D:F9:DD:79:9C:17:76:37:71:5F:1C:98:DC:8D:26:84:68:9F:B0:65:E9:E6:D5:23:51:3A:BB:20:00:E6:5A
- 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.
This certificate has been served since Oct 2, 2026.
Never get surprised by scietech-hk.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch scietech-hk.com 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, 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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