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
nginx
Page Title
華堂光學實業 Hwatang Optics.重拾探索樂趣
Meta Description
創立於1984年。以放大鏡探索知識書海、望遠鏡探索生態奇景、顯微鏡探索微觀奧秘!挑選最適合您的視覺輔具、戶外用品、光學儀器,享受光學帶來的美好生活與提昇工作效率。
Meta Keywords
望遠鏡,放大鏡,顯微鏡,戶外旅遊,老花眼鏡,低視力,Low-Vision,低視能,弱視,輔具,Magnifying glass,binoculars,職務再設計,reading,閱讀,手工藝,DIY,品管,QC,視覺輔具,複式顯微鏡,解剖顯微鏡,金相顯微鏡,珠寶,寶石,鑑定,光學鏡框,眼鏡框,純鈦,德國放大鏡,高倍放大鏡,日本放大鏡,放大鏡燈,賞鳥望遠鏡,演唱會,航海,生存遊戲,瞄準鏡,光學瞄具,濾藍光眼鏡,抗藍光眼鏡,美睫,美容,膚質檢測,頭皮檢測,擴視機,可攜式擴視機,桌上型擴視機,低視力學,驗光師,眼鏡行,驗光所,太陽眼鏡
Last Checked
just now
Last Status Change
No change observed
Last Downtime
Never observed down

Observed Changes

DateStatusServer
11/4/2026, 5:53:29 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 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.