SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zk-tech.com
SSL/TLS Certificate
SSL/TLS Certificate for zk-tech.com
Expiring soon- Issued by (CA)
- GoDaddy.com, Inc.
- Subject
- zk-tech.com
- Valid from
- Oct 15, 2025
- Valid until
- Oct 15, 2026 (17 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2E907791FB2C2B83
- SHA-256 fingerprint
- 9B:64:91:1A:19:B9:AE:61:AA:D2:54:4F:37:82:42:5C:5B:5A:B6:09:DD:4E:9B:7F:B4:D9:B7:D5:22:82:D8:29
- Chain
- Go Daddy Secure Certificate Authority - G2 → Go Daddy Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by zk-tech.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zk-tech.com 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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