Website Uptime Monitor
Monitor website availability and server information for any domain
i001.cn
Uptime & Server Information
Current Status
Observed Changes
| Date | Status | Server |
|---|---|---|
| 9/22/2026, 10:49:40 AM | Active | nginx/1.29.6 |
| 9/21/2026, 1:31:54 AM | Inactive | Unknown |
| 8/26/2026, 11:58:52 AM | Active | nginx/1.29.6 |
| 8/25/2026, 11:51:26 AM | Active | nginx/1.29.6 |
| 7/4/2026, 8:40:40 AM | Active | nginx/1.29.6 |
| 6/21/2026, 10:41:54 AM | Active | nginx/1.29.6 |
| 6/13/2026, 8:39:03 PM | Active | nginx/1.29.6 |
| 6/11/2026, 12:58:00 PM | Active | nginx/1.29.6 |
| 6/7/2026, 11:34:09 AM | Active | nginx/1.29.6 |
| 5/11/2026, 10:30:46 PM | Active | nginx/1.29.6 |
| 5/2/2026, 11:04:55 AM | Active | nginx/1.29.6 |
| 4/30/2026, 9:28:27 PM | Active | nginx/1.29.6 |
| 4/16/2026, 1:30:24 PM | Active | nginx/1.29.6 |
| 3/23/2026, 12:17:22 AM | Active | nginx/1.29.6 |
| 3/17/2026, 2:45:40 AM | Inactive | Unknown |
| 3/10/2026, 2:30:08 AM | Active | nginx/1.29.3 |
| 2/24/2026, 3:35:29 AM | Active | nginx/1.29.3 |
| 1/31/2026, 4:58:28 AM | Inactive | Unknown |
| 1/23/2026, 2:53:16 AM | Inactive | Unknown |
| 1/21/2026, 2:16:23 PM | Inactive | Unknown |
| 1/18/2026, 12:37:29 AM | Inactive | Unknown |
| 1/11/2026, 10:50:28 AM | Inactive | Unknown |
| 1/8/2026, 12:49:31 PM | Inactive | Unknown |
| 12/25/2025, 10:57:35 AM | Inactive | Unknown |
| 12/20/2025, 9:15:23 PM | Inactive | Unknown |
| 12/5/2025, 4:13:06 PM | Inactive | Unknown |
| 12/1/2025, 12:41:41 PM | Inactive | Unknown |
| 11/16/2025, 7:44:17 PM | Inactive | Unknown |
| 11/15/2025, 3:23:52 PM | Inactive | Unknown |
| 10/30/2025, 8:38:26 AM | Active | nginx/1.27.5 |
| 10/19/2025, 12:38:05 AM | Active | nginx/1.27.5 |
| 9/7/2025, 8:20:19 PM | Active | nginx/1.27.5 |
| 7/12/2025, 10:42:58 PM | Active | nginx/1.27.5 |
| 7/6/2025, 11:41:20 AM | Active | nginx/1.27.5 |
| 6/28/2025, 12:42:27 PM | Active | nginx/1.27.5 |
| 6/19/2025, 3:01:49 AM | Active | nginx/1.27.5 |
| 6/15/2025, 8:11:00 AM | Inactive | Unknown |
| 5/17/2025, 12:42:24 AM | Active | nginx/1.27.2 |
| 5/12/2025, 3:32:43 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.
What this page reports
- Last status change: When we last saw a site switch between reachable and unreachable
- Last downtime: When a site was most recently seen down, and whether it has come back
- Server and meta information: The server software, page title and meta tags we last observed
We check a domain at most once a day and record an observation only when something changes, so these are the times a change was seen rather than the exact moment it happened. For continuous, minute-by-minute checks with alerting, use website monitoring.
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.