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
協同建設株式会社|建設業|栃木県宇都宮市
Meta Description
協同建設株式会社のホームページです。協同建設株式会社は、栃木県内を中心に新築・リフォームを手がける建設会社です。基礎工事や大工工事、現場管理で培った経験を生かし、注文住宅の新築から水回り・内装・雨漏りのリフォーム、不動産のご相談までお応えします。
Meta Keywords
協同建設株式会社, 栃木県宇都宮市 建設会社, 宇都宮市 新築, 宇都宮市 注文住宅, 栃木県 リフォーム, 水回り リフォーム, 雨漏り 修繕, 中古住宅 買取再販, 不動産 販売 仲介, 基礎工事 大工工事
Last Checked
just now
Last Status Change
Came back up — just now (11/9/2026)
Last Downtime
First seen down 33 days ago (10/6/2026), back up just now

Observed Changes

DateStatusServer
11/9/2026, 5:43:41 AMActivecloudflare
10/6/2026, 3:09:38 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.