Website Uptime Monitor

Monitor website availability and server information for any domain

archergroupconsulting.com

Uptime & Server Information

Current Status

Status
Active
Server Type
nginx
Page Title
几何、三角函数、代数、数学、物理、化学计算器 - 在线计算网
Meta Description
在线计算网提供代数计算,积分 微分,数理统计,矩阵,数字计算,几何计算,平面几何,立体几何,面积和周长,三角学,体积计算,解析几何,转换计算,单位换算,日期和时间,颜色转换,进制转换,物理计算,经典物理,电子电路,网页工具,Html工具,健康计算器
Meta Keywords
代数计算,积分 微分,数理统计,矩阵,数字计算,几何计算,平面几何,立体几何,面积和周长,三角学,体积计算,解析几何,转换计算,单位换算,日期和时间,颜色转换,进制转换,物理计算,经典物理,电子电路,网页工具,Html工具,健康计算器
Last Checked
just now
Last Status Change
Came back up — 6 days ago (9/21/2026)
Last Downtime
First seen down 11 days ago (9/16/2026), back up 6 days ago

Observed Changes

DateStatusServer
9/21/2026, 6:11:35 AMActivenginx
9/16/2026, 5:24:20 PMInactiveUnknown
9/2/2026, 12:16:00 PMActivenginx
7/29/2026, 2:17:04 PMInactiveUnknown
6/3/2026, 7:16:44 PMActivenginx
3/5/2026, 2:06:50 AMActivenginx
2/7/2026, 3:30:04 PMInactiveUnknown
1/19/2026, 8:21:45 AMInactiveUnknown
10/11/2025, 6:16:18 PMActivenginx
8/20/2025, 3:40:47 PMActivenginx
8/12/2025, 10:09:03 AMInactiveUnknown
6/25/2025, 1:11:56 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.