Website Uptime Monitor
Monitor website availability and server information for any domain
colosa.cn
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 7/27/2026, 2:27:04 PM | Active | nginx |
| 6/12/2026, 1:33:40 PM | Active | nginx |
| 6/6/2026, 8:10:57 AM | Active | nginx |
| 6/1/2026, 6:07:42 AM | Active | nginx |
| 5/28/2026, 11:58:08 PM | Active | nginx |
| 5/16/2026, 6:30:57 AM | Inactive | Unknown |
| 5/1/2026, 10:10:38 PM | Inactive | Unknown |
| 4/13/2026, 1:32:54 AM | Inactive | Unknown |
| 3/27/2026, 2:02:25 PM | Inactive | Unknown |
| 3/15/2026, 9:17:43 PM | Inactive | Unknown |
| 3/8/2026, 6:10:53 AM | Inactive | Unknown |
| 2/5/2026, 3:31:41 AM | Inactive | Unknown |
| 1/30/2026, 2:37:45 PM | Inactive | Unknown |
| 1/29/2026, 1:34:25 PM | Inactive | Unknown |
| 1/27/2026, 11:35:06 PM | Inactive | Unknown |
| 1/25/2026, 12:39:43 AM | Inactive | Unknown |
| 1/4/2026, 3:55:58 AM | Inactive | Unknown |
| 12/25/2025, 10:32:22 PM | Inactive | Unknown |
| 12/24/2025, 7:11:43 AM | Inactive | Unknown |
| 12/20/2025, 12:48:44 PM | Inactive | Unknown |
| 12/17/2025, 4:55:19 PM | Inactive | Unknown |
| 11/4/2025, 1:57:48 AM | Inactive | Unknown |
| 11/2/2025, 9:33:36 PM | Inactive | Unknown |
| 10/12/2025, 7:51:34 PM | Inactive | Unknown |
| 10/7/2025, 8:33:32 PM | Inactive | Unknown |
| 10/3/2025, 9:22:20 PM | Inactive | Unknown |
| 9/29/2025, 3:35:14 PM | Inactive | Unknown |
| 9/25/2025, 5:05:59 PM | Inactive | Unknown |
| 9/20/2025, 4:46:20 PM | Inactive | Unknown |
| 9/16/2025, 10:27:48 PM | Inactive | Unknown |
| 9/7/2025, 1:44:00 PM | Inactive | Unknown |
| 9/4/2025, 7:00:08 AM | Inactive | Unknown |
| 8/31/2025, 9:37:28 AM | Inactive | Unknown |
| 8/26/2025, 8:09:18 PM | Inactive | Unknown |
| 8/21/2025, 5:30:12 PM | Inactive | Unknown |
| 8/19/2025, 9:28:00 AM | Inactive | Unknown |
| 8/1/2025, 11:48:19 AM | Active | nginx |
| 7/13/2025, 3:14:50 PM | Active | nginx |
| 7/6/2025, 8:01:17 AM | Active | nginx |
| 6/27/2025, 4:40:19 PM | Active | nginx |
| 6/12/2025, 12:09:17 PM | Active | nginx |
| 5/18/2025, 5:51:34 AM | 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.