SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
nzsafetyblackwoods.co.nz
SSL/TLS Certificate
SSL/TLS Certificate for nzsafetyblackwoods.co.nz
Valid- Issued by (CA)
- DigiCert Inc
- Subject
- nzsafetyblackwoods.co.nz
- Valid from
- Apr 14, 2026
- Valid until
- Oct 29, 2026 (72 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0CF34E2EC0D93366547F15B97A1B787A
- SHA-256 fingerprint
- 3C:28:3F:2D:78:FF:91:04:96:8F:F3:BF:C2:6F:6C:57:47:7E:E6:55:F9:7E:BE:C0:48:25:1D:5F:A6:6F:CA:01
- Chain
- GeoTrust TLS RSA CA G1 → DigiCert Global Root G2 → DigiCert Global Root CA
Certificate Authority Authorization (CAA)
The serving CA (DigiCert Inc) is authorized by this domain's CAA records (amazon.com, amazonaws.com, amazontrust.com, awstrust.com, comodoca.com, digicert.com, entrust.net, letsencrypt.org, pki.goog, sectigo.com, ssl.com).
This certificate has been served since Jul 31, 2026.
Never get surprised by nzsafetyblackwoods.co.nz's certificate expiring
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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, 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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