Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
nginx/1.30.3
Page Title
zipcode.us
Meta Description
Information on zip codes. Weather, local news, Wikipedia, area officials, area schools, and more!
Meta Keywords
Not available
Most Recent Data
0 hours, 0 minutes ago

Historical Data

DateStatusServer
7/24/2026, 8:42:18 AMActivenginx/1.30.3
6/28/2026, 8:59:04 AMActivenginx/1.20.1
6/17/2026, 6:43:33 PMActivenginx/1.20.1
6/12/2026, 3:36:45 PMActivenginx/1.20.1
6/8/2026, 2:14:57 AMActivenginx/1.20.1
4/15/2026, 2:31:01 PMInactiveUnknown
2/21/2026, 5:34:55 PMInactiveUnknown
1/22/2026, 10:53:32 AMInactiveUnknown
1/21/2026, 1:02:25 AMInactiveUnknown
1/17/2026, 7:36:10 PMInactiveUnknown
1/14/2026, 8:15:36 PMInactiveUnknown
1/2/2026, 3:55:26 AMInactiveUnknown
12/29/2025, 11:23:09 AMInactiveUnknown
12/16/2025, 4:39:55 PMActivenginx/1.26.3
12/12/2025, 8:39:12 PMActivenginx/1.26.3
11/11/2025, 5:09:07 AMActivenginx/1.26.3
11/6/2025, 7:20:00 PMActivenginx/1.26.3
7/1/2025, 9:59:15 PMActivenginx/1.26.3

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.