Always on time
with NTP monitoring

  • PRTG monitors your NTP Servers
  • Identify sources of errors more quickly with NTP Monitoring
  • Our dashboard lets you keep an eye on everything

Free Download
  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime

NTP Monitoring makes



When a problem occurs in your network, every minute counts when searching for its cause, especially if the problem is a critical one. The exact time a problem occurs plays an important role in determining its cause. The question: Did any unusual incidents take place at the time the problem occurred?

Therefore, it is important that local system times are always synchronized with the precise timestamp sent by an NTP server

NTP monitoring with PRTG ensures that time synchronization is up and running. This way, ambiguity regarding the classification of errors based on their occurrence at a certain point in time is eliminated, and administrators are able to find causes and solutions more efficiently.

Working with PRTG will give you peace of mind.

3 statistics collected by PRTG for your NTP monitoring


Local system times of network devices

Response time of the NTP Server

Precise NTP server time

Local system times and
precise NTP Server

Differences between local times and server time

Differences between local times and server time

This is what NTP monitoring looks like in PRTG

This is how NTP monitoring with PRTG works



A high-precision-clock, such as a GPS satellite, is the basis of an NTP server’s timestamp.

The NTP Sensor continuously monitors the response time of an NTP server. It also compares the local system times of your network devices with the NTP server’s precise timestamp.


 i What is a sensor?

In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one measured value in your network, e.g. the traffic of a switch port, the CPU load of a server, the free space of a disk drive. On average you need about 5-10 sensors per device or one sensor per switch port.

View video (3:26 min.)

Advantages of
NTP monitoring with PRTG

Identify sources of error

Identify sources of errors faster

Administrators will spend less time racking their brains and painstakingly comparing the times an error occurred. With the NTP Sensor, they can make sure that time synchronization works fine at all times.

Automation for a lighter workload

Avoid time differences between systems

Thanks to NTP monitoring, administrators can react quickly if an NTP server is not responding anymore. Differences between local system times and the NTP server timestamp can therefore be avoided and the underlying causes of a problem determined faster

PRTG simplifies your day!

Let our NTP monitoring software work for you.
So you can concentrate on your day-to-day tasks with peace of mind.

PRTG saves time

With PRTG, you get one central monitoring tool for all your NTP servers. You’ll enjoy a quick and complete overview at all times via our dashboard and app.

PRTG saves worry

Monitoring your servers around the clock has never been easier. The built-in alarm feature is quick to act – before crashes and complaints arise.

PRTG saves money

80% of our customers report substantial or even exceptional network management cost savings. The experience of our customers shows that the costs for licenses have paid for themselves in an average of 3 ½ months.



Trusted by 300,000 users
and recognized by industry analysts as a leader

“Fantastic network and infrastructure monitoring solution that is easy to deploy and easier still to use. Simply the best available.”

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“Software is absolutely perfect, Support is superior. Meets all needs and requirements, This is a must have solution if you are needing any form of monitoring.”

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“The tool excels at its primary focus of being a unified infrastructure management and network monitoring service.”

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  • Unlimited version of PRTG for 30 days
  • After 30 days, PRTG reverts to a free version
  • Or, you can upgrade to a paid license anytime

Your NTP Monitoring at a glance
– even on the go

PRTG can be started within minutes and it's compatible with many mobile devices.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.


PRTG monitors these vendors and applications, and more, in one view!



Also interesting:

Website monitoring:
 Is your website always available? Are all its key processes operational? Are its load times increasing? With PRTG, you can monitor the worldwide availability of your website with the HTTP and Cloud HTTP sensors. The same goes for your VPN servers and entire (distributed) IT infrastructure.

Packet Sniffing: The PRTG Packet Sniffer Sensor monitors web traffic, mail traffic, file transfer traffic, and much more. Check out our section on packet sniffing to find out how to set up the Packet Sniffer Sensor, and to get an idea of the advantages and disadvantages that come with this technology.

VoIP monitoring: PRTG monitors the quality of your VoIP-connections. By preventing malfunctions and verifying service level agreements, you’ll save time and money.


PRTG The Swiss Army knife

PRTG: The Swiss Army knife for sysadmins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • REST Custom Sensor: Monitor almost everything that provides XML or JSON

Still not convinced?



More than 300,000 sysadmins love PRTG

PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.

Still not convinced?


Monitor your entire IT infrastructure

Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.




Free Download



Try PRTG for free

Everyone has different monitoring needs. That’s why we let you try PRTG for free. Start now with your 30-day trial.



Network Monitoring Software - Version (July 6th, 2021)


Download for Windows and cloud-based version PRTG Hosted Monitor available


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Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications


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