Website Uptime Monitor
Monitor website availability and server information for any domain
yahoo.co.jp
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 8/3/2026, 2:54:04 PM | Active | Unknown |
| 7/18/2026, 12:46:24 PM | Active | Unknown |
| 7/2/2026, 5:08:21 AM | Active | Unknown |
| 6/12/2026, 8:44:10 PM | Active | Unknown |
| 6/9/2026, 2:51:41 PM | Inactive | Unknown |
| 5/30/2026, 4:56:03 PM | Active | Unknown |
| 5/27/2026, 10:40:10 PM | Active | Unknown |
| 5/23/2026, 3:09:17 PM | Active | Unknown |
| 5/15/2026, 1:37:31 AM | Active | Unknown |
| 5/10/2026, 12:05:36 AM | Active | Unknown |
| 5/8/2026, 6:27:01 AM | Active | Unknown |
| 5/6/2026, 9:48:50 PM | Inactive | Unknown |
| 4/23/2026, 4:50:31 AM | Active | Unknown |
| 4/8/2026, 10:53:07 AM | Active | Unknown |
| 3/28/2026, 8:31:02 PM | Inactive | Unknown |
| 3/26/2026, 5:24:46 PM | Inactive | Unknown |
| 3/24/2026, 5:06:24 AM | Active | Unknown |
| 3/3/2026, 8:11:00 PM | Active | Unknown |
| 2/27/2026, 10:41:08 AM | Active | Unknown |
| 2/23/2026, 3:21:59 PM | Active | Unknown |
| 2/3/2026, 4:38:14 PM | Inactive | Unknown |
| 1/29/2026, 8:42:36 PM | Inactive | Unknown |
| 1/27/2026, 8:29:20 AM | Active | Unknown |
| 1/26/2026, 2:07:29 AM | Inactive | Unknown |
| 1/20/2026, 1:19:27 PM | Active | Unknown |
| 1/19/2026, 1:21:21 AM | Active | Unknown |
| 1/17/2026, 9:38:36 PM | Inactive | Unknown |
| 1/15/2026, 11:28:18 AM | Inactive | Unknown |
| 1/11/2026, 6:13:55 PM | Inactive | Unknown |
| 1/8/2026, 5:20:23 AM | Inactive | Unknown |
| 1/4/2026, 6:24:41 AM | Inactive | Unknown |
| 1/2/2026, 7:26:24 PM | Inactive | Unknown |
| 1/1/2026, 7:33:12 AM | Inactive | Unknown |
| 12/29/2025, 3:01:41 AM | Inactive | Unknown |
| 12/27/2025, 1:48:47 PM | Inactive | Unknown |
| 12/22/2025, 5:31:19 AM | Inactive | Unknown |
| 12/21/2025, 1:26:26 AM | Inactive | Unknown |
| 12/19/2025, 2:30:12 PM | Inactive | Unknown |
| 12/18/2025, 11:37:25 AM | Inactive | Unknown |
| 12/17/2025, 7:56:31 AM | Inactive | Unknown |
| 12/15/2025, 7:12:18 AM | Inactive | Unknown |
| 12/12/2025, 6:28:49 PM | Active | Unknown |
| 12/8/2025, 1:01:00 AM | Active | Unknown |
| 12/6/2025, 9:39:17 PM | Active | Unknown |
| 12/5/2025, 7:11:58 PM | Inactive | Unknown |
| 12/4/2025, 4:23:09 PM | Active | Unknown |
| 12/2/2025, 3:42:15 PM | Active | Unknown |
| 11/29/2025, 9:57:59 PM | Active | Unknown |
| 11/27/2025, 4:25:38 PM | Active | Unknown |
| 11/25/2025, 8:24:02 AM | Active | Unknown |
| 11/22/2025, 6:56:53 AM | Active | Unknown |
| 11/20/2025, 2:01:39 AM | Active | Unknown |
| 11/17/2025, 5:42:11 PM | Active | Unknown |
| 11/15/2025, 5:36:59 PM | Active | Unknown |
| 11/13/2025, 8:41:50 PM | Active | Unknown |
| 11/10/2025, 9:52:55 PM | Active | nginx |
| 11/4/2025, 9:48:49 AM | Active | Unknown |
| 9/28/2025, 8:51:47 PM | Active | nginx |
| 9/11/2025, 9:26:12 AM | Active | nginx |
| 9/4/2025, 1:54:04 AM | Active | nginx |
| 8/29/2025, 2:54:06 PM | Active | nginx |
| 8/26/2025, 3:22:06 PM | Active | nginx |
| 8/22/2025, 4:49:09 PM | Active | nginx |
| 7/29/2025, 4:13:31 AM | Active | nginx |
| 7/25/2025, 3:29:08 PM | Active | nginx |
| 5/29/2025, 6:31:30 PM | Active | nginx |
| 5/4/2025, 10:17:47 PM | Active | nginx |
| 5/3/2025, 1:33:56 PM | Active | nginx |
| 5/2/2025, 1:48:53 AM | Active | nginx |
| 4/25/2025, 9:17:37 PM | Active | nginx |
| 4/22/2025, 7:28:38 PM | Active | nginx |
| 4/21/2025, 8:37:30 AM | Active | nginx |
| 4/15/2025, 1:07:58 AM | Active | nginx |
| 4/13/2025, 3:06:13 PM | Active | nginx |
| 4/12/2025, 3:27:54 AM | Active | nginx |
| 4/9/2025, 8:16:18 AM | Active | nginx |
| 4/7/2025, 11:42:26 PM | Active | nginx |
| 4/6/2025, 6:43:58 AM | Active | nginx |
| 4/3/2025, 10:08:45 PM | Active | nginx |
| 3/18/2025, 1:16:25 AM | Active | nginx |
| 3/14/2025, 6:48:55 AM | Active | nginx |
| 3/12/2025, 7:57:42 AM | Active | nginx |
| 2/27/2025, 2:50:25 PM | Active | nginx |
| 2/8/2025, 12:07:54 PM | Active | nginx |
| 2/6/2025, 12:38:12 AM | Active | nginx |
| 2/4/2025, 5:58:38 AM | Active | nginx |
| 2/1/2025, 4:45:03 PM | Active | nginx |
| 1/20/2025, 12:04:52 AM | Active | nginx |
| 1/7/2025, 11:41:48 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.