SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bayfield-high.school.nz
SSL/TLS Certificate
SSL/TLS Certificate for bayfield-high.school.nz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bayfield-high.school.nz
- Valid from
- Sep 13, 2026
- Valid until
- Dec 12, 2026 (31 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06DDD9965E2F6AD33414B7E583679E18F239
- SHA-256 fingerprint
- B3:29:1E:66:AB:FF:A5:ED:43:75:1E:9B:37:EE:1D:D2:66:DE:DD:72:09:F7:F6:ED:B9:3C:6B:87:73:C0:B6:C0
- Chain
- YR1 → 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 Aug 17, 2026.
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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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