Website Uptime Monitor
Monitor website availability and server information for any domain
03331.cn
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 9/6/2026, 7:16:51 AM | Active | nginx |
| 9/2/2026, 9:03:18 PM | Active | nginx |
| 8/30/2026, 11:19:04 AM | Active | nginx |
| 8/23/2026, 5:15:54 AM | Active | nginx |
| 8/21/2026, 9:36:58 PM | Active | nginx |
| 7/19/2026, 10:09:29 AM | Active | nginx |
| 7/3/2026, 7:19:22 AM | Inactive | Unknown |
| 6/19/2026, 10:57:03 AM | Inactive | Unknown |
| 6/9/2026, 1:31:25 PM | Inactive | Unknown |
| 6/4/2026, 5:34:59 AM | Inactive | Unknown |
| 5/15/2026, 8:26:06 AM | Active | nginx |
| 5/9/2026, 4:33:52 AM | Active | nginx |
| 5/7/2026, 5:22:56 AM | Active | nginx |
| 3/22/2026, 2:01:09 PM | Active | nginx |
| 2/21/2026, 10:21:41 AM | Inactive | Unknown |
| 1/22/2026, 11:54:51 PM | Inactive | Unknown |
| 1/16/2026, 6:51:46 AM | Active | nginx |
| 1/14/2026, 1:42:55 AM | Inactive | Unknown |
| 12/19/2025, 5:52:56 AM | Inactive | Unknown |
| 12/14/2025, 6:28:52 PM | Active | nginx |
| 12/5/2025, 7:41:54 PM | Inactive | Unknown |
| 8/13/2025, 8:10:06 AM | Inactive | Unknown |
| 8/3/2025, 5:30:34 PM | Inactive | Unknown |
| 7/15/2025, 8:24:24 PM | Inactive | Unknown |
| 5/4/2025, 12:01:12 PM | Active | nginx |
| 5/2/2025, 2:31:23 PM | Active | nginx |
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.