Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
cloudflare
Page Title
彩墨导航 - OPC开发资源一站式聚合平台 - 彩墨
Meta Description
彩墨导航 - 精心收录OPC开发、常用工具、设计资源、技术社区等优质网站,助力开发者高效工作。支持分类浏览、一键直达。
Meta Keywords
彩墨,OPC导航,OPC UA,OPC Foundation,开发资源,程序员工具箱,设计资源,网站导航,常用工具,技术社区
Last Checked
just now
Last Status Change
Came back up — 5 months ago (4/8/2026)
Last Downtime
First seen down 9 months ago (12/18/2025), back up 5 months ago

Observed Changes

DateStatusServer
10/2/2026, 3:09:05 AMActivecloudflare
4/8/2026, 9:38:45 AMActiveBeaver
1/27/2026, 9:54:50 PMInactiveUnknown
1/16/2026, 10:12:09 PMInactiveUnknown
12/30/2025, 10:19:23 AMInactiveUnknown
12/18/2025, 6:17:53 AMInactiveUnknown
12/6/2025, 7:23:16 PMActiveBeaver
11/26/2025, 11:44:09 AMActiveBeaver
11/21/2025, 11:18:54 PMActiveBeaver
11/12/2025, 5:16:35 AMActiveBeaver
11/6/2025, 11:41:52 AMActiveBeaver
11/4/2025, 8:24:36 PMActiveBeaver
10/27/2025, 11:35:27 AMActiveBeaver
8/30/2025, 7:42:05 AMActiveBeaver
8/21/2025, 12:30:58 PMActiveBeaver
7/8/2025, 7:48:02 PMActiveBeaver
6/12/2025, 11:23:43 PMActiveBeaver
3/7/2025, 2:39:10 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

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, DNSSEC, CNAME 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

Use the Who.is uptime information to track the availability and server information of websites. This helps track:

  • Website availability and response status
  • Server software and configuration
  • Meta information including titles and descriptions
  • Historical uptime patterns

This information is valuable for website owners, system administrators, and anyone interested in monitoring website reliability and performance.

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.