SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tes-edu.hk
SSL/TLS Certificate
SSL/TLS Certificate for tes-edu.hk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- fun-tastic.org.hk
- Valid from
- Oct 14, 2026
- Valid until
- Jan 12, 2027 (57 days remaining)
- Public key
- EC 256-bit
- Serial
- 064FEC226AFF374A5A808AF8A8EF2C8509D9
- SHA-256 fingerprint
- 67:6E:14:FC:C5:95:7C:86:C8:90:A3:C3:38:27:FC:FE:27:5F:B5:82:40:21:ED:63:5D:BD:31:F0:98:3A:D4:1C
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 Sep 25, 2026.
Never get surprised by tes-edu.hk's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch tes-edu.hk 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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