Website Uptime Monitor
Monitor website availability and server information for any domain
21n.io
Uptime & Server Information
Current Status
Observed Changes
| Date | Status | Server |
|---|---|---|
| 9/8/2026, 8:04:35 PM | Active | cloudflare |
| 9/4/2026, 10:00:39 PM | Active | cloudflare |
| 9/2/2026, 5:49:08 AM | Active | cloudflare |
| 8/16/2026, 8:21:58 AM | Active | cloudflare |
| 8/10/2026, 5:33:52 AM | Active | cloudflare |
| 6/10/2026, 5:25:50 AM | Inactive | Unknown |
| 5/29/2026, 6:43:38 AM | Inactive | Unknown |
| 5/18/2026, 2:45:12 PM | Inactive | Unknown |
| 5/17/2026, 7:59:27 AM | Inactive | Unknown |
| 5/15/2026, 11:43:08 AM | Inactive | Unknown |
| 5/1/2026, 10:27:51 PM | Inactive | Unknown |
| 4/29/2026, 9:48:39 PM | Inactive | Unknown |
| 4/19/2026, 6:58:03 AM | Inactive | Unknown |
| 4/19/2026, 6:58:03 AM | Inactive | Unknown |
| 4/19/2026, 6:58:03 AM | Inactive | Unknown |
| 4/19/2026, 6:58:03 AM | Inactive | Unknown |
| 4/13/2026, 4:17:13 PM | Inactive | Unknown |
| 4/9/2026, 11:43:10 PM | Inactive | Unknown |
| 4/6/2026, 11:53:08 AM | Inactive | Unknown |
| 4/1/2026, 2:12:13 PM | Inactive | Unknown |
| 3/31/2026, 12:40:15 PM | Inactive | Unknown |
| 3/28/2026, 11:43:06 AM | Inactive | Unknown |
| 2/24/2026, 7:25:46 PM | Inactive | Unknown |
| 2/7/2026, 3:39:52 PM | Inactive | Unknown |
| 1/29/2026, 9:32:43 PM | Inactive | Unknown |
| 1/21/2026, 1:23:54 PM | Inactive | Unknown |
| 1/13/2026, 1:53:08 PM | Inactive | Unknown |
| 1/8/2026, 12:06:55 PM | Inactive | Unknown |
| 1/5/2026, 8:23:44 AM | Inactive | Unknown |
| 1/3/2026, 5:41:51 AM | Inactive | Unknown |
| 12/25/2025, 4:50:39 AM | Inactive | Unknown |
| 12/24/2025, 2:37:52 AM | Inactive | Unknown |
| 12/21/2025, 1:20:04 AM | Inactive | Unknown |
| 11/30/2025, 6:12:21 AM | Inactive | Unknown |
| 11/26/2025, 5:22:53 PM | Inactive | Unknown |
| 11/24/2025, 5:54:52 PM | Inactive | Unknown |
| 11/22/2025, 9:49:56 PM | Inactive | Unknown |
| 11/16/2025, 3:15:55 AM | Inactive | Unknown |
| 11/8/2025, 4:57:10 PM | Inactive | Unknown |
| 11/6/2025, 8:44:00 AM | Inactive | Unknown |
| 11/2/2025, 9:24:40 AM | Inactive | Unknown |
| 11/1/2025, 7:49:15 AM | Inactive | Unknown |
| 10/27/2025, 9:10:14 PM | Inactive | Unknown |
| 10/24/2025, 2:46:44 PM | Inactive | Unknown |
| 10/19/2025, 10:36:19 AM | Inactive | Unknown |
| 10/2/2025, 1:10:14 AM | Inactive | Unknown |
| 9/19/2025, 1:44:34 AM | Inactive | Unknown |
| 9/7/2025, 10:37:10 AM | Inactive | Unknown |
| 8/29/2025, 10:09:26 AM | Inactive | Unknown |
| 8/24/2025, 10:35:37 AM | Inactive | Unknown |
| 8/19/2025, 11:26:13 PM | Inactive | Unknown |
| 7/24/2025, 4:58:40 AM | Active | cloudflare |
| 7/14/2025, 2:45:08 AM | Active | cloudflare |
| 7/12/2025, 10:15:04 AM | Active | cloudflare |
| 7/3/2025, 9:19:02 AM | Active | cloudflare |
| 6/30/2025, 2:13:53 PM | Active | cloudflare |
| 6/8/2025, 3:02:39 AM | Active | cloudflare |
| 5/12/2025, 5:13:54 PM | Active | cloudflare |
| 4/13/2025, 3:11:44 AM | Inactive | Unknown |
| 4/11/2025, 8:28:42 PM | Inactive | Unknown |
| 3/3/2025, 1:58:54 PM | Inactive | Unknown |
| 2/13/2025, 9:46:15 PM | Inactive | Unknown |
| 2/9/2025, 3:37:12 AM | Inactive | Unknown |
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.