Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
hcdn
Page Title
BusyTab: Tab Manager for Too Many Tabs
Meta Description
Most tab managers organize a few dozen tabs. BusyTab is built for hundreds across dozens of windows: triage what went stale, organize the rest into Projects, archive instead of losing, and let on-device AI sort what is too big to sort by hand.
Meta Keywords
Not available
Last Checked
just now
Last Status Change
Came back up — 4 months ago (5/20/2026)
Last Downtime
First seen down 9 months ago (12/25/2025), back up 4 months ago

Observed Changes

DateStatusServer
9/25/2026, 1:06:54 PMActivehcdn
7/27/2026, 9:12:03 PMActiveUnknown
7/12/2026, 6:04:09 AMActiveUnknown
6/8/2026, 3:57:18 PMActiveUnknown
6/1/2026, 7:04:41 PMActiveUnknown
5/20/2026, 12:52:44 AMActiveUnknown
1/25/2026, 8:49:21 PMInactiveUnknown
1/15/2026, 7:09:33 PMInactiveUnknown
1/12/2026, 8:07:04 PMInactiveUnknown
12/25/2025, 9:20:03 PMInactiveUnknown
12/2/2025, 1:56:09 PMActiveUnknown
11/21/2025, 9:08:35 AMActiveUnknown
8/27/2025, 8:10:52 PMActiveUnknown
7/12/2025, 1:59:24 PMActiveUnknown

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.