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
nginx2018
Page Title
牙e家 口腔医生 进阶实战 学习培训训练营,病例分享平台
Meta Description
牙e家立足口腔行业,提供贴面、全冠、嵌体、拔牙、根管、牙周、种植、正畸、早期矫正、树脂等进阶式、实战化的持续学习分享病例途径,跟黄叶君、冯楠、王垚、郑礼悦、于洋、王垚、丁周宇、杨启强、郑礼悦、雅翼等导师合作,致力于培养更多未来口腔行业的核心人才
Meta Keywords
口腔医生学习,训练营,根管,牙周,种植,口腔摄影技巧,口腔咨询师,早期矫正,树脂修复,贴面,嵌体,拔牙,修复,全冠,门诊小手术,正畸,黄叶君、冯楠、王垚、郑礼悦、于洋、王垚、丁周宇、杨启强、郑礼悦、雅翼
Last Checked
just now
Last Status Change
Came back up — 9 months ago (1/27/2026)
Last Downtime
First seen down 10 months ago (1/1/2026), back up 9 months ago

Observed Changes

DateStatusServer
6/24/2026, 12:20:49 PMActivenginx2018
1/27/2026, 12:24:03 AMActivenginx2018
1/1/2026, 10:33:53 PMInactiveUnknown
11/2/2025, 3:55:46 AMActivenginx2018

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.