SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a-onekg.edu.hk
SSL/TLS Certificate
SSL/TLS Certificate for a-onekg.edu.hk
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- a-onekg.edu.hk
- Valid from
- Nov 4, 2026
- Valid until
- Feb 2, 2027 (88 days remaining)
- Public key
- EC 256-bit
- Serial
- 064E3FFB34B5335A40DAA268E7D0C624A58C
- SHA-256 fingerprint
- 66:8A:B6:BA:A9:1E:81:28:F5:9E:EB:D5:4C:E6:D6:4F:11:70:1A:B8:1B:A1:79:CA:36:2F:C1:2E:1E:65:77:E5
- Chain
- YE2 → 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 Oct 29, 2026.
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Uptime
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DNS changes
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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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