SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
codemark.co.nz
SSL/TLS Certificate
SSL/TLS Certificate for codemark.co.nz
Valid- Issued by (CA)
- Google Trust Services
- Subject
- codemark.co.nz
- Valid from
- Oct 1, 2026
- Valid until
- Dec 30, 2026 (74 days remaining)
- Public key
- EC 256-bit
- Serial
- 264E69B8117614E40E94F7AA5DF56025
- SHA-256 fingerprint
- 24:90:AB:56:BA:75:D0:6E:20:20:4C:B3:CC:4B:76:6C:2F:89:AE:B9:27:9B:C0:08:12:C9:06:15:48:05:E2:C5
- Chain
- WE1 → GTS Root R4
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 6, 2026.
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This is today's certificate. Turn on monitoring and we'll watch codemark.co.nz 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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