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
回鸣科技 Echo Technology | 雷达与传感解决方案 Radar & Sensing Solutions Manufacturer
Meta Description
杭州回鸣科技有限公司(Hangzhou Echo Technology Co., Ltd.)— 雷达传感器制造商:对地测速雷达、自动门传感器、无人机传感器、液位传感器、人存检测模块,研发生产销售一体,OEM/ODM,出口40多个国家。
Meta Keywords
回鸣科技,杭州回鸣科技,雷达传感器,对地测速雷达,毫米波雷达,自动门传感器,人存检测,液位传感器,流速传感器,RAS2,RA333,RA11,RW12A01,ground speed radar, radar sensor, doppler radar, automatic door sensor, level sensor, presence sensor, flow meter, OEM radar
Last Checked
just now
Last Status Change
No change observed
Last Downtime
Never observed down

Observed Changes

DateStatusServer
9/21/2026, 3:43:12 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.