Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
GitHub.com
Page Title
Sen He — Assistant Professor, ECE, University of Arizona
Meta Description
Sen He, Assistant Professor of Electrical & Computer Engineering at the University of Arizona. Research in multi-agent LLM orchestration, software performance engineering, and efficient computer vision.
Meta Keywords
Not available
Most Recent Data
0 hours, 0 minutes ago

Historical Data

DateStatusServer
8/12/2026, 3:42:10 AMActiveGitHub.com
5/25/2026, 7:44:14 PMActiveGitHub.com
5/22/2026, 7:36:54 PMActiveGitHub.com
4/22/2026, 1:37:55 AMActiveGitHub.com
4/18/2026, 3:45:29 AMActiveGitHub.com
2/13/2026, 3:38:59 PMInactiveUnknown
1/14/2026, 8:50:12 AMInactiveUnknown
11/19/2025, 1:49:55 PMInactiveUnknown
10/19/2025, 9:07:37 AMActiveGitHub.com
6/22/2025, 7:40:02 PMActiveGitHub.com

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.

Metrics we monitor

  • Uptime percentage: The percentage of time your website is accessible
  • Response time: How quickly your server responds to requests
  • Status codes: HTTP response codes indicating server status

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.