Website Uptime Monitor
Monitor website availability and server information for any domain
42221.com
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 8/3/2026, 5:55:16 AM | Active | nginx |
| 7/9/2026, 3:06:56 PM | Active | nginx |
| 7/4/2026, 11:00:14 AM | Active | nginx |
| 5/20/2026, 12:16:20 AM | Active | nginx |
| 4/25/2026, 7:17:24 PM | Active | nginx |
| 3/28/2026, 11:30:41 AM | Active | nginx |
| 1/31/2026, 12:01:06 AM | Inactive | Unknown |
| 1/24/2026, 10:02:37 PM | Inactive | Unknown |
| 1/20/2026, 4:22:17 PM | Inactive | Unknown |
| 1/10/2026, 5:09:21 AM | Inactive | Unknown |
| 1/3/2026, 5:58:37 AM | Inactive | Unknown |
| 12/16/2025, 11:34:28 AM | Inactive | Unknown |
| 11/26/2025, 9:02:53 AM | Active | nginx |
| 11/23/2025, 1:27:55 PM | Active | nginx |
| 9/13/2025, 4:46:45 AM | Active | Tengine |
| 9/10/2025, 1:34:50 AM | Active | Tengine |
| 8/14/2025, 5:55:12 AM | Active | Tengine |
| 7/10/2025, 4:43:06 PM | Active | Tengine |
| 6/30/2025, 3:56:13 PM | Active | Tengine |
| 6/25/2025, 5:40:54 PM | Active | Tengine |
| 6/22/2025, 12:06:53 PM | Inactive | Unknown |
| 6/20/2025, 5:11:27 PM | Inactive | Unknown |
| 5/27/2025, 8:18:31 PM | Active | nginx |
| 5/17/2025, 1:31:39 PM | Active | nginx |
| 5/3/2025, 11:41:45 PM | Active | nginx |
| 5/2/2025, 3:47:14 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.