Website Uptime Monitor
Monitor website availability and server information for any domain
cysy.cz
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 7/27/2026, 9:13:42 PM | Active | nginx |
| 7/16/2026, 2:12:43 PM | Active | nginx |
| 7/11/2026, 3:42:19 PM | Active | nginx |
| 6/26/2026, 3:50:45 PM | Active | nginx |
| 5/23/2026, 8:38:26 AM | Active | nginx |
| 5/18/2026, 7:05:41 PM | Active | nginx |
| 5/3/2026, 7:16:23 PM | Active | nginx |
| 3/30/2026, 4:36:37 PM | Inactive | Unknown |
| 1/23/2026, 11:37:25 PM | Inactive | Unknown |
| 1/21/2026, 3:22:35 PM | Inactive | Unknown |
| 1/7/2026, 9:30:57 PM | Inactive | Unknown |
| 1/3/2026, 9:19:11 AM | Inactive | Unknown |
| 12/13/2025, 12:09:06 PM | Inactive | Unknown |
| 12/10/2025, 7:09:55 PM | Active | nginx |
| 12/7/2025, 10:30:06 AM | Active | nginx |
| 11/26/2025, 3:30:35 AM | Active | nginx |
| 11/22/2025, 6:23:52 AM | Active | nginx |
| 11/17/2025, 7:01:37 AM | Active | nginx |
| 11/5/2025, 9:59:21 PM | Active | nginx |
| 11/3/2025, 5:10:49 AM | Active | nginx |
| 10/31/2025, 7:03:05 PM | Active | nginx |
| 10/28/2025, 3:11:21 PM | Active | nginx |
| 10/18/2025, 10:08:04 PM | Active | nginx |
| 9/20/2025, 10:45:40 PM | Active | nginx |
| 9/5/2025, 2:31:07 PM | Active | nginx |
| 8/29/2025, 2:43:29 AM | Active | nginx |
| 8/21/2025, 10:33:11 PM | Active | nginx |
| 8/19/2025, 7:37:26 AM | Active | nginx |
| 8/10/2025, 12:45:49 PM | Active | nginx |
| 7/6/2025, 7:58:48 PM | Active | nginx |
| 6/21/2025, 3:56:55 AM | Active | nginx |
| 6/18/2025, 7:06:03 AM | Inactive | Unknown |
Don't just check uptime once — watch it 24/7
This is a one-time check. Turn on monitoring and we'll watch the domains that matter to you 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.
About Website Uptime Monitoring
Use the Who.is uptime information to track the availability and server information of websites. This helps track:
- Website availability and response status
- Server software and configuration
- Meta information including titles and descriptions
- Historical uptime patterns
This information is valuable for website owners, system administrators, and anyone interested in monitoring website reliability and performance.
Metrics we monitor
- Uptime percentage: The percentage of time your website is accessible
- Response time: How quickly your server responds to requests
- Status codes: HTTP response codes indicating server status
Disclaimer: Who.is is not affiliated with, endorsed by, or connected to any of the domains displayed on this page. We provide this information as a public service for informational purposes only.