Website Uptime Monitor
Monitor website availability and server information for any domain
tenawan.ne.jp
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 9/7/2026, 8:10:30 AM | Active | Microsoft-IIS/10.0 |
| 8/18/2026, 1:26:58 AM | Active | Microsoft-IIS/10.0 |
| 5/30/2026, 7:20:16 PM | Active | Microsoft-IIS/10.0 |
| 5/21/2026, 4:00:32 AM | Active | Microsoft-IIS/10.0 |
| 2/8/2026, 6:32:55 PM | Inactive | Unknown |
| 11/5/2025, 4:40:13 AM | Active | Microsoft-IIS/10.0 |
| 10/13/2025, 5:10:47 PM | Active | Microsoft-IIS/8.5 |
| 10/9/2025, 8:36:44 PM | Inactive | Unknown |
| 10/6/2025, 12:06:05 AM | Active | Microsoft-IIS/8.5 |
| 10/1/2025, 7:54:35 PM | Active | Microsoft-IIS/8.5 |
| 9/26/2025, 3:53:01 PM | Active | Microsoft-IIS/8.5 |
| 9/22/2025, 6:32:19 PM | Active | Microsoft-IIS/8.5 |
| 9/18/2025, 8:10:56 PM | Active | Microsoft-IIS/8.5 |
| 9/15/2025, 2:28:44 AM | Active | Microsoft-IIS/8.5 |
| 9/9/2025, 2:10:23 PM | Active | Microsoft-IIS/8.5 |
| 9/5/2025, 1:39:11 PM | Active | Microsoft-IIS/8.5 |
| 9/1/2025, 11:47:05 PM | Active | Microsoft-IIS/8.5 |
| 8/29/2025, 4:30:27 AM | Active | Microsoft-IIS/8.5 |
| 8/24/2025, 1:04:05 AM | Active | Microsoft-IIS/8.5 |
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.