SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
academia.co.nz
SSL/TLS Certificate
SSL/TLS Certificate for academia.co.nz
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- academia.co.nz
- Valid from
- Jan 31, 2025
- Valid until
- May 1, 2025 (expired 502 days ago)
- Public key
- EC 384-bit
- Serial
- 03D24067D31A581099069AA67A783A07BE46
- SHA-256 fingerprint
- C9:0C:A8:CC:4C:F3:12:F3:53:0A:4D:6D:5B:E8:4B:52:97:79:ED:3B:6C:62:41:D0:CA:A9:55:43:3F:F8:F4:5B
- Chain
- E5 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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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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