UptimeVanguard
For site owners

About our monitoring requests

You found UptimeVanguard/… (+https://uptimevanguard.com/bot) in your logs. This page says who we are, why we request your site, where the requests come from, and how to stop them.

Who we are

UptimeVanguard is an uptime monitoring service. It checks that websites and APIs answer, and alerts its customers when they do not. The application and its results are hosted in Germany.

Why we request your site

  • A customer of ours added this address as a monitor. Usually that is the site's owner or the people who run it.
  • We request it at the interval the customer set, at most once a minute from each region the monitor uses, with the method the customer chose (usually GET or HEAD). While a check fails, we check every 30 seconds for up to an hour, then every 5 minutes, until it recovers.
  • When a monitor is added, we may measure the address once from every region: 3 requests per region. These requests carry the header X-UptimeVanguard-Probe: region-pick.
  • A broken-link scan requests the links on the monitored page once, with HEAD and, if needed, GET.
  • We only request public addresses, and we do not follow links beyond the monitored page.

User agent

Every request sends UptimeVanguard/<version> (+https://uptimevanguard.com/bot).

Where the requests come from

Machine-readable list: /bot/ips.json.

  • Falkenstein, Germany: 2.31.135.110
  • Amsterdam, Netherlands: 78.141.214.157
  • London, United Kingdom: 209.222.30.177, 2001:19f0:7402:6fa:5400:6ff:fe09:6a67
  • Newark, United States: 104.156.226.63, 2001:19f0:0:3d2b:5400:6ff:fe09:336e
  • Los Angeles, United States: 149.248.16.165, 2001:19f0:6001:5969:5400:6ff:fe09:6512
  • São Paulo, Brazil: 216.238.124.104, 2001:19f0:b800:1f2b:5400:6ff:fe09:6514
  • Johannesburg, South Africa: 139.84.238.161, 2a05:f480:3000:2c97:5400:6ff:fe09:6a69
  • Singapore: 207.148.67.221, 2001:19f0:4401:bc0:5400:6ff:fe09:336d
  • Tokyo, Japan: 167.179.71.0, 2001:19f0:7002:81c:5400:6ff:fe09:6a66
  • Sydney, Australia: 45.63.31.163, 2401:c080:1800:4ecd:5400:6ff:fe09:6513
  • Our application (SSL, broken-link and health checks), Falkenstein, Germany: 46.4.114.88, 2a01:4f8:141:124f::2

How to stop the requests

  • If you know who monitors your site, ask them to remove the monitor.
  • Otherwise, mail [email protected] with the address that is being requested. We stop monitoring it on request.
  • You can also block the addresses above or the user agent. The monitor of our customer then reports your site as down.