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Which information does PRTG send back to Paessler?



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For update notifications, which URLs will PRTG call in order to contact the Paessler web servers?

domains privacy prtg update-check urls

Created on Nov 17, 2011 5:01:02 PM by  Daniel Zobel [Paessler Support]

Last change on Nov 17, 2011 5:02:12 PM by  Daniel Zobel [Paessler Support]

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This article applies to PRTG Network Monitor 9 or later

How PRTG's Automatic Update Notifications Work

PRTG's automatic update downloads and notifications are powerful features that help you keep your PRTG installation up-to-date easily. With each new version we provide new features and bug fixes.

Which Domains does PRTG Connect To?

To find out if there is a new version available PRTG sends an HTTP request once every 24 hours (and once per restart) to:

If the update check finds a new version or if a user clicks on Download Now on the "Auto Update" page, PRTG will connect to

to find out if the license key is entitled for a free update. If yes, it will download the update from one of our download servers, usually

Can I Use a Proxy?

By default, PRTG will try to use a direct internet connection. If a proxy is mandatory in your network, please log in to the PRTG web interface and configure your proxy settings in the "System & Website" settings. For details about proxy settings, please see PRTG Manual: System Administration—System and Website

Can I Block this Traffic?

You could block this traffic by adding entries to the local hosts file that point to a non existent IP.

But this will kill the update notification and auto-update functionality, of course.

See Also

Which servers does PRTG connect to for Software Auto-Update and for Activation?

Created on Nov 17, 2011 5:20:49 PM by  Daniel Zobel [Paessler Support]

Last change on May 7, 2014 3:58:52 PM by  Gerald Schoch [Paessler Support]

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Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.