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
Unknown
Page Title
北京华艾鑫节能设备有限公司,板式换热器,换热机
Meta Description
北京华艾鑫节能设备有限公司,板式换热器,换热机 北京华艾鑫节能设备有限公司(瑞德韦尔)致力于热交换领域的解决方案,三十年来持续优化板式换热器的应用性能和工艺流程, 目前产品已应运于暖通、化工、船舶、核电、食品、石油等不同的工况,在热交换领域占有重要位置。
Meta Keywords
换热机,板式换热器,瑞德韦尔,水处理器
Last Checked
just now
Last Status Change
Came back up — just now (11/8/2026)
Last Downtime
First seen down 10 months ago (12/26/2025), back up just now

Observed Changes

DateStatusServer
11/8/2026, 10:06:37 PMActiveUnknown
2/8/2026, 3:08:31 PMInactiveUnknown
2/8/2026, 3:08:29 PMInactiveUnknown
1/23/2026, 4:45:43 PMInactiveUnknown
1/22/2026, 9:10:27 AMInactiveUnknown
12/26/2025, 3:02:55 AMInactiveUnknown
11/8/2025, 2:19:44 AMActiveopenresty
10/23/2025, 7:28:40 AMActiveopenresty
7/30/2025, 2:44:02 PMInactiveUnknown

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.