SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for zs-x.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- zs-x.com
- Valid from
- Feb 3, 2026
- Valid until
- Feb 3, 2027 (179 days remaining)
- Public key
- RSA 2048-bit
- Serial
- A68881CC222C1D081C2FC956BBBBFEB9
- SHA-256 fingerprint
- 1B:35:38:A0:6B:B9:F8:5A:63:F8:9F:7B:3E:BC:17:56:6D:ED:EE:67:04:DD:D4:40:0C:49:A6:20:34:CC:37:A0
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by zs-x.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zs-x.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.