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
J9直营集团【中国大陆】官方网站
Meta Description
专业级J9官网为新能源充电场站投资方、设备制造商与综合运营商提供全生命周期的数字化运营底座。平台原生适配国标GB/T 27930及国际OCPP 1.6/2.0.1协议规范,具备秒级计费结算、多商户独立分账、动态负荷调控算法以及毫秒级设备故障自愈告警机制。系统支持公有云敏捷托管与私有化本地集群高可用部署,已稳定承载数十万终端桩群的高并发物联网交互,全面助力企业构建自主可控、互联互通、合规透明的智慧充电网络。
Meta Keywords
J9集团,充电桩运营管理系统,充电桩SaaS平台,新能源充电结算系统,OCPP协议接入,充电站监控系统
Last Checked
just now
Last Status Change
No change observed
Last Downtime
Never observed down

Observed Changes

DateStatusServer
11/11/2026, 11:18:45 PMActivecloudflare

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.