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
Apache
Page Title
音响设计网|音响灯光工程网|专业音响网|智能音影网|家庭影院网|建筑声学网|系统集成网|acoustic design|audio design|audio technology|acoustic technology - Powered by Discuz!
Meta Description
中国音响设计网,非常感谢广大专业音响、灯光、建筑声学、系统集成、舞台机械、中央控制、视频、录音、音乐等等相关行业的工作者、专家、领导的关注!这是我们工作的最大动力.本站重点讨论以上各系统的设计技术、运用技术及综合解决方案。-站长:谢勇010-58895760 , 13718392626.
Meta Keywords
音响设计网,音响设计,音视频工程设计,音响工程设计,专业音响,专业音响论坛,建筑声学网,系统集成网,专业灯光,舞台机械,舞美设计,视频技术,非线编制作,录音混音,音乐网站,中央控制,KTV讨论,VOD讨论,电影系统,剧场,剧院,体育馆,体育场,多功能厅音响,视频会议,监控安防,会议室音响,报告厅音响
Last Checked
just now
Last Status Change
Came back up — 3 months ago (8/9/2026)
Last Downtime
First seen down 10 months ago (1/13/2026), back up 3 months ago

Observed Changes

DateStatusServer
8/9/2026, 11:38:24 PMActiveApache
1/20/2026, 1:37:07 PMInactiveUnknown
1/13/2026, 1:03:41 AMInactiveUnknown

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.