Website Uptime Monitor
Monitor website availability and server information for any domain
gzlab.ac.cn
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 7/29/2026, 3:26:04 AM | Active | nginx/1.30.3 |
| 7/14/2026, 2:50:59 AM | Active | nginx/1.30.3 |
| 6/23/2026, 9:37:13 AM | Active | nginx/1.30.2 |
| 6/17/2026, 6:37:39 AM | Active | nginx/1.30.2 |
| 6/12/2026, 3:38:15 AM | Inactive | Unknown |
| 6/2/2026, 4:26:00 AM | Inactive | Unknown |
| 5/16/2026, 6:36:50 AM | Active | nginx/1.20.1 |
| 4/30/2026, 9:35:55 PM | Inactive | Unknown |
| 4/23/2026, 5:17:12 PM | Inactive | Unknown |
| 3/15/2026, 6:46:27 AM | Inactive | Unknown |
| 2/26/2026, 4:58:48 PM | Active | nginx/1.20.1 |
| 1/8/2026, 2:30:08 AM | Inactive | Unknown |
| 12/19/2025, 2:58:01 PM | Inactive | Unknown |
| 11/30/2025, 8:23:44 AM | Inactive | Unknown |
| 11/20/2025, 1:17:37 PM | Inactive | Unknown |
| 11/17/2025, 11:03:54 AM | Inactive | Unknown |
| 10/25/2025, 1:37:19 PM | Inactive | Unknown |
| 9/18/2025, 10:45:24 PM | Active | nginx/1.20.1 |
| 8/27/2025, 7:40:22 AM | Active | Microsoft-IIS/10.0 |
| 8/22/2025, 11:59:02 PM | Active | Microsoft-IIS/10.0 |
| 8/15/2025, 12:22:53 PM | Inactive | Unknown |
| 7/8/2025, 9:51:11 AM | Inactive | Unknown |
| 6/30/2025, 2:29:31 AM | Active | Microsoft-IIS/10.0 |
| 6/28/2025, 4:50:38 PM | Active | Microsoft-IIS/10.0 |
| 2/17/2025, 7:24:59 PM | Active | Microsoft-IIS/10.0 |
| 2/3/2025, 6:53:00 PM | Active | Microsoft-IIS/10.0 |
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.