SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
z-teck.com
SSL/TLS Certificate
SSL/TLS Certificate for z-teck.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- m.z-teck.com
- Valid from
- Jun 27, 2026
- Valid until
- Sep 25, 2026 (61 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0591870B832FF34587919A18FAD030F4F94F
- SHA-256 fingerprint
- 0F:60:96:FD:9C:A6:40:D9:A9:69:51:07:8D:87:C7:68:E3:5E:16:C6:CC:39:BB:0A:10:75:BF:DB:76:66:38:5F
- 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.
Never get surprised by z-teck.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch z-teck.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.