Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
nginx
Page Title
TopTu - 专业网络拓扑图设计工具 | 在线画拓扑图 | 机房设备管理
Meta Description
TopTu 是一款专业的在线网络拓扑图设计工具,支持拖拽式作图、50+ 网络设备图标、云端同步、团队协作、扫码分享,可导出 PDF / PNG。适合网络工程师、运维、集成商绘制机房拓扑、办公网结构图、园区网方案。
Meta Keywords
网络拓扑图,拓扑图工具,在线画拓扑图,网络拓扑图软件,机房拓扑图,交换机拓扑图,拓扑图在线编辑,network topology,TopTu,网络图,网络架构图,网工工具
Most Recent Data
0 hours, 0 minutes ago

Historical Data

DateStatusServer
8/9/2026, 10:29:06 PMActivenginx

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.

Monitor uptime free

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.