Website Uptime Monitor
Monitor website availability and server information for any domain
21113.com
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 9/9/2026, 12:10:12 PM | Active | nginx |
| 9/2/2026, 4:51:54 PM | Active | nginx |
| 7/1/2026, 4:00:45 AM | Active | nginx |
| 6/3/2026, 9:39:01 AM | Active | nginx |
| 5/24/2026, 8:48:01 AM | Active | nginx |
| 4/11/2026, 3:14:53 PM | Active | nginx |
| 4/7/2026, 1:05:53 AM | Inactive | Unknown |
| 2/20/2026, 4:35:43 PM | Inactive | Unknown |
| 2/15/2026, 9:10:32 AM | Active | nginx |
| 2/1/2026, 3:04:50 AM | Inactive | Unknown |
| 1/28/2026, 10:30:24 AM | Active | nginx |
| 1/17/2026, 1:01:47 PM | Inactive | Unknown |
| 1/13/2026, 2:30:52 PM | Inactive | Unknown |
| 1/2/2026, 6:11:09 PM | Inactive | Unknown |
| 12/15/2025, 8:13:48 AM | Inactive | Unknown |
| 12/7/2025, 9:39:19 PM | Active | nginx |
| 11/28/2025, 1:50:53 AM | Active | Tengine |
| 11/24/2025, 3:17:09 PM | Active | Tengine |
| 11/23/2025, 9:14:03 AM | Active | Tengine |
| 11/14/2025, 1:40:58 AM | Active | Tengine |
| 11/11/2025, 11:05:12 PM | Active | Tengine |
| 11/9/2025, 8:27:26 PM | Active | Tengine |
| 10/7/2025, 4:30:25 PM | Active | Tengine |
| 9/20/2025, 2:55:35 AM | Active | Tengine |
| 9/4/2025, 1:05:15 AM | Active | Tengine |
| 8/13/2025, 7:11:21 AM | Inactive | Unknown |
| 7/10/2025, 5:02:43 PM | Active | Tengine |
| 6/27/2025, 2:25:04 PM | Active | Tengine |
| 6/16/2025, 11:27:35 PM | Active | Tengine |
| 6/12/2025, 1:39:27 AM | Active | Tengine |
| 5/19/2025, 8:44:16 AM | Active | Tengine |
| 5/10/2025, 9:05:31 AM | Active | Tengine |
| 5/6/2025, 10:18:27 PM | Active | Tengine |
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.