Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
wts/1.7.0
Page Title
屹持光电-太赫兹/超快激光/激光器/光谱测量,专业提供各类光电设备
Meta Description
上海屹持光电技术有限公司专业从事飞秒激光器,皮秒激光器,太赫兹探测器,太赫兹频域光谱仪,红外相机,红外光谱仪,光子晶体光纤,光束质量分析仪,光功率计,激光倍频器,波前传感器等太赫兹,超快激光,传统激光等领域相关产品的研发,引进,销售,方案设计,组装集成技术服务.
Meta Keywords
飞秒激光器,飞秒光纤激光器,皮秒激光器,太赫兹时域光谱仪,太赫兹相机,太赫兹近场系统,太赫兹探针,太赫兹透镜,宽带光源,SPF,近红外光谱仪,光纤激光器,皮秒光纤激光器,太赫兹功率计,QCL,微加工,窄线宽激光器,单频激光器
Last Checked
just now
Last Status Change
Came back up — 4 months ago (5/25/2026)
Last Downtime
First seen down 7 months ago (2/25/2026), back up 4 months ago

Observed Changes

DateStatusServer
7/27/2026, 12:33:26 PMActivewts/1.7.0
5/25/2026, 3:29:30 AMActivewts/1.7.0
4/4/2026, 9:59:19 PMInactiveUnknown
3/15/2026, 10:50:38 PMInactiveUnknown
2/25/2026, 5:12:09 AMInactiveUnknown

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.