Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
nginx
Page Title
The U-boat Wars 1939-1945 (Kriegsmarine) and 1914-1918 (Kaiserliche Marine) and Allied Warships of WWII - uboat.net
Meta Description
The U-boat War in World War Two (1939-1945) and World War One (1914-1918). Over 30,000 pages on the officers, the boats, technology and the Allied efforts to counter the U-boat threat.
Meta Keywords
U-boat, submarine, boats, technology, XXI, VIIC, IX, II, XIV, XXIII, Uboote, Unterseeboote, aircraft, escorts, Kriegsmarine, German navy, U-boote.
Last Checked
just now
Last Status Change
Came back up3 months ago (6/4/2026)
Last Downtime
First seen down 8 months ago (12/30/2025), back up 3 months ago

Observed Changes

DateStatusServer
9/5/2026, 2:59:55 AMActivenginx
7/15/2026, 11:52:52 AMActivenginx
7/11/2026, 3:00:03 AMActivenginx
6/4/2026, 2:38:12 PMActivenginx
2/11/2026, 9:19:47 AMInactiveUnknown
1/26/2026, 1:16:32 PMInactiveUnknown
12/30/2025, 4:39:41 AMInactiveUnknown
10/8/2025, 2:27:08 AMActivenginx
9/30/2025, 8:01:21 AMInactiveUnknown
9/12/2025, 8:28:10 AMInactiveUnknown
9/1/2025, 10:39:57 AMActivenginx
8/11/2025, 12:53:53 PMInactiveUnknown
7/4/2025, 12:16:01 AMActivenginx
5/23/2025, 4:25:08 AMActivenginx

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.