Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
tencent-cos
Page Title
他思笔记 - 用科技促进人的自由全面发展 - 信息技术|数据科学|量化交易
Meta Description
他思笔记(heth.ink)是YK的独立博客站,以计算机技术理论到工程实践为主线,分享主题涵盖信息技术、数据科学以及量化交易,具体内容包括实用软件与编程技巧、机器学习算法的原理与应用、量化投资策略等。我们相信技术所带来的效率提升,能够最终实现人的自由全面发展这一终极需求,并希望通过知识的自由开放共享促进这一过程。
Meta Keywords
Not available
Last Checked
just now
Last Status Change
Came back up3 months ago (5/24/2026)
Last Downtime
First seen down 7 months ago (2/4/2026), back up 3 months ago

Observed Changes

DateStatusServer
5/24/2026, 10:10:06 PMActivetencent-cos
2/12/2026, 2:57:37 AMInactiveUnknown
2/4/2026, 7:40:46 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.