Website Uptime Monitor
Monitor website availability and server information for any domain
docker.com
Uptime & Server Information
Current Status
Observed Changes
| Date | Status | Server |
|---|---|---|
| 9/25/2026, 8:20:17 AM | Active | nginx |
| 9/23/2026, 1:59:30 PM | Active | nginx |
| 9/18/2026, 4:45:53 AM | Inactive | Unknown |
| 9/6/2026, 12:10:21 PM | Active | nginx |
| 8/13/2026, 5:50:19 PM | Active | nginx |
| 7/30/2026, 10:02:30 PM | Active | nginx |
| 7/14/2026, 12:58:59 AM | Active | nginx |
| 7/4/2026, 2:44:21 AM | Inactive | Unknown |
| 6/7/2026, 8:20:08 AM | Active | nginx |
| 5/21/2026, 1:39:28 PM | Active | nginx |
| 5/18/2026, 8:35:36 PM | Active | nginx |
| 5/6/2026, 4:04:19 PM | Active | nginx |
| 5/1/2026, 5:14:57 PM | Active | nginx |
| 4/19/2026, 4:19:25 AM | Active | nginx |
| 3/20/2026, 12:19:11 AM | Active | nginx |
| 3/17/2026, 5:16:04 PM | Inactive | Unknown |
| 3/16/2026, 1:09:51 PM | Inactive | Unknown |
| 2/13/2026, 3:34:01 AM | Inactive | Unknown |
| 2/4/2026, 6:18:28 AM | Inactive | Unknown |
| 1/30/2026, 10:12:06 PM | Active | nginx |
| 1/23/2026, 1:12:13 AM | Inactive | Unknown |
| 1/21/2026, 3:14:47 PM | Inactive | Unknown |
| 1/7/2026, 10:12:49 AM | Inactive | Unknown |
| 1/5/2026, 6:57:27 AM | Inactive | Unknown |
| 1/4/2026, 6:13:39 AM | Inactive | Unknown |
| 12/26/2025, 2:28:54 PM | Inactive | Unknown |
| 12/24/2025, 4:35:50 AM | Active | nginx |
| 12/19/2025, 2:56:15 AM | Inactive | Unknown |
| 11/15/2025, 7:49:33 PM | Active | nginx |
| 10/25/2025, 5:34:10 PM | Active | nginx |
| 9/25/2025, 4:29:54 PM | Active | nginx |
| 9/13/2025, 12:12:53 AM | Active | nginx |
| 9/5/2025, 12:56:03 AM | Active | nginx |
| 7/31/2025, 2:50:38 AM | Active | nginx |
| 7/23/2025, 10:50:47 AM | Active | nginx |
| 6/30/2025, 4:42:47 AM | Active | nginx |
| 6/22/2025, 6:38:41 AM | Active | nginx |
| 6/18/2025, 1:08:16 PM | Active | nginx |
| 6/11/2025, 12:46:53 AM | Active | nginx |
| 5/8/2025, 3:44:05 AM | Active | nginx |
| 5/2/2025, 7:27:18 PM | Active | nginx |
| 4/25/2025, 1:13:38 PM | Active | nginx |
| 4/24/2025, 11:32:03 AM | Active | nginx |
| 4/11/2025, 12:14:18 AM | Active | nginx |
| 4/4/2025, 8:37:51 AM | Active | nginx |
| 3/27/2025, 10:27:59 AM | Active | nginx |
| 3/21/2025, 6:16:55 PM | Active | nginx |
| 3/20/2025, 1:32:24 PM | Active | nginx |
| 3/1/2025, 8:50:56 PM | Active | nginx |
| 2/19/2025, 12:10:55 PM | Active | nginx |
| 2/18/2025, 4:20:46 AM | Active | nginx |
| 2/13/2025, 5:47:10 PM | Active | nginx |
| 2/9/2025, 10:39:14 AM | Active | nginx |
| 2/4/2025, 7:45:47 AM | Active | cloudflare |
| 2/1/2025, 9:45:24 AM | Active | cloudflare |
| 1/28/2025, 6:40:22 PM | Active | cloudflare |
| 1/23/2025, 10:54:09 AM | Active | cloudflare |
| 1/22/2025, 9:30:16 AM | Active | cloudflare |
| 1/12/2025, 9:02:40 AM | Active | cloudflare |
| 1/8/2025, 3:26:17 AM | Active | cloudflare |
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.
What this page reports
- Last status change: When we last saw a site switch between reachable and unreachable
- Last downtime: When a site was most recently seen down, and whether it has come back
- Server and meta information: The server software, page title and meta tags we last observed
We check a domain at most once a day and record an observation only when something changes, so these are the times a change was seen rather than the exact moment it happened. For continuous, minute-by-minute checks with alerting, use website monitoring.
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.