Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
Server
Page Title
(주)에스티에이
Meta Description
.
Meta Keywords
Not available
Most Recent Data
0 hours, 0 minutes ago

Historical Data

DateStatusServer
7/22/2026, 5:33:50 AMActiveServer
7/14/2026, 8:17:38 PMActiveServer
7/13/2026, 7:26:07 PMActiveServer
7/9/2026, 8:32:29 AMActiveServer
5/17/2026, 9:37:51 PMActiveServer
5/7/2026, 11:21:23 PMActiveServer
4/10/2026, 9:08:14 PMActiveServer
3/16/2026, 5:17:01 PMInactiveUnknown
2/22/2026, 2:19:24 AMActiveServer
1/27/2026, 9:15:16 AMActiveServer
1/10/2026, 12:02:55 AMActiveServer
1/3/2026, 4:09:23 AMInactiveUnknown
12/31/2025, 7:44:12 AMInactiveUnknown
12/23/2025, 5:27:23 PMInactiveUnknown
12/10/2025, 4:03:31 AMActiveServer
11/29/2025, 2:35:54 PMActiveServer
9/19/2025, 9:03:55 PMActiveServer
9/7/2025, 8:02:08 AMInactiveUnknown
7/1/2025, 12:14:25 PMInactiveUnknown
7/1/2025, 12:14:22 PMActiveServer
5/28/2025, 4:09:53 AMActiveServer
5/19/2025, 11:37:46 PMActiveApache

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.