Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
nginx
Page Title
无锡四五零科技有限公司
Meta Description
工装夹具、模具、自动化设备及配件、通用机械设备及配件、量具、计算机及配件的研发、设计、销售;信息技术领域的研发;企业管理咨询&培训
Meta Keywords
工装夹具,模具,自动化,设备,配件,通用,机械,量具,计算机,研发,设计,销售,信息技术,企业管理,咨询,培训
Most Recent Data
0 hours, 0 minutes ago

Historical Data

DateStatusServer
9/10/2026, 2:59:28 PMActivenginx
4/18/2026, 2:03:17 PMActivenginx
1/7/2026, 10:22:52 PMActivenginx
12/15/2025, 4:01:27 AMActivenginx
9/5/2025, 1:00:13 AMActivenginx
9/1/2025, 1:26:19 AMActivenginx

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.