Website Down Checker

See whether a site was up at our last check and when it last went down.

Current Status

Status
Active
Server Type
cloudflare
Page Title
在线工具站 - 18 个免费纯本地处理的开发者与办公工具
Meta Description
免费在线工具箱:JSON 格式化、Base64 编解码、时间戳转换、正则测试、Cron 表达式解析、Markdown 预览、文本去重排序、字数统计、文本对比、汉字笔画查询、二维码生成、二维码解码、图片压缩、颜色转换、单位换算、日期计算、房贷计算、个税计算。全部纯浏览器本地处理,文件不上传服务器,无需登录,不限次数。
Meta Keywords
在线工具,JSON格式化,Base64编解码,时间戳转换,正则表达式测试,Cron表达式解析,Markdown在线预览,文本去重排序,字数统计,文本对比,汉字笔画查询,二维码生成,二维码解码,图片压缩,颜色转换,单位换算,日期计算器,房贷计算器,个税计算器,免费在线工具
Last Checked
just now
Last Status Change
No change observed
Last Downtime
Never observed down

Observed Changes

DateStatusServer
11/2/2026, 1:26:54 AMActivecloudflare

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 monitor with 7-day uptime percentage, failed checks, average latency by region, and daily outages

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, CNAME, TXT 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

This page shows whether we could reach a website the last time we checked it. We also keep a record of when it went down and came back, so you can see whether an outage is new or has happened before. For each site we show:

  • Website availability and response status
  • Server software and configuration
  • Meta information including titles and descriptions
  • Historical uptime patterns

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.