Website Uptime Monitor
Monitor website availability and server information for any domain
cityhaarlem.nl
Uptime & Server Information
Current Status
Historical Data
| Date | Status | Server |
|---|---|---|
| 7/23/2026, 6:30:16 PM | Active | openresty/1.31.1.1 |
| 6/7/2026, 9:23:47 AM | Active | LiteSpeed |
| 6/3/2026, 2:36:16 AM | Active | LiteSpeed |
| 5/5/2026, 10:21:07 AM | Active | LiteSpeed |
| 5/2/2026, 10:22:39 AM | Active | LiteSpeed |
| 4/30/2026, 2:23:58 PM | Active | LiteSpeed |
| 4/29/2026, 3:58:39 AM | Active | LiteSpeed |
| 4/24/2026, 12:59:16 AM | Active | LiteSpeed |
| 4/21/2026, 12:54:11 AM | Active | LiteSpeed |
| 4/5/2026, 7:32:20 PM | Active | LiteSpeed |
| 3/26/2026, 4:13:53 PM | Active | LiteSpeed |
| 2/7/2026, 8:39:43 AM | Inactive | Unknown |
| 12/16/2025, 9:55:46 AM | Inactive | Unknown |
| 12/4/2025, 3:56:41 AM | Inactive | Unknown |
| 11/16/2025, 1:55:57 PM | Active | LiteSpeed |
| 11/6/2025, 4:07:51 PM | Active | LiteSpeed |
| 11/2/2025, 7:50:04 PM | Active | LiteSpeed |
| 11/1/2025, 4:11:41 PM | Active | LiteSpeed |
| 10/28/2025, 4:20:28 AM | Active | LiteSpeed |
| 9/24/2025, 12:53:52 AM | Active | LiteSpeed |
| 9/8/2025, 10:13:23 PM | Active | LiteSpeed |
| 8/20/2025, 1:34:02 PM | Active | LiteSpeed |
| 7/12/2025, 2:22:41 AM | Active | LiteSpeed |
| 6/23/2025, 12:40:47 PM | Inactive | Unknown |
| 6/22/2025, 8:13:57 AM | Inactive | Unknown |
| 3/4/2025, 4:06:10 AM | Active | 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.
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.