All-in-one IP monitor PRTG

  • Professional IP scanning software
  • IP check & ping IP with PRTG
  • Use PRTG as your IP Sniffer and IP traffic monitor


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

IP/network scanner: why PRTG is the tool for you!

A convenient overview

A convenient overview

With PRTG, you'll always know the score! Its central dashboard lets you see if everything is in the "green." As soon as problems or failures occur, the view immediately jumps to the "red". Thanks to our apps you get to stay abreast of the current status at all times - even when you're on the go.

Prompt and customizable alarms

Prompt and customizable alarms

PRTG features a built-in notification function. Its alarm is entirely customizable, which means you can decide to be alerted by e-mail, SMS, or page. Configure the alarm so you can be notified promptly – before system failures occur! By doing so, you will increase the reliability of your network.

A noticeable saving of time

A noticeable saving of time

Paessler regularly carries out customer surveys. One survey result: more than half of our customers indicate that they save two hours or more per week by using PRTG. Over the course of a year, this amounts to around 100 hours. Two full work weeks, which you can use to focus on more important things.

IP Monitoring:
3 handy PRTG features






iWhat 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.)


Auto-discovery quickly identifies IP addresses

PRTG makes it easy for administrators to indicate which IP addresses are relevant. PRTG pings all IP addresses and automatically begins to monitor their associated devices. You will therefore save lots of precious time and can rest assured that everything is covered.

iAn IP address (internet protocol address) is a numerical representation that uniquely identifies a specific interface on the network. IP addresses are binary numbers but are typically expressed in decimal form (IPv4) or hexadecimal form (IPv6) to make reading and using them easier for humans. Read more ...

Overview Toplists

By configuring Packet Sniffing or NetFlow sensors, Toplists will automatically be generated in the sensor overview. Toplists contain three categories: top talkers, top connections, and top protocols. These lists enable you to identify the largest bandwidth consumers at a quick glance. You can even create additional Toplists. For more information, see our Toplists page.

200+ sensors make getting started a breeze

PRTG comes with over 200 pre-configured sensors. Among these are sensors for your hardware, bandwidth, website, and server. Check out our sensor list page for details. Sensors make getting started with PRTG - or switching from other monitoring software - both easy and convenient. And in general, setup takes no time at all - even for complex infrastructures. Our Smart Setup scans your network during the installation process and configures some initial monitoring as a starting point.


IP check in PRTG works as follows:




“The greatest advantage of PRTG? You get to rest easy“

Steffen Ille, Bauhaus-University Weimar.

PRTG simplifies your day!

Let our IP monitor work for you.
So you can concentrate on day-to-day tasks with total peace of mind.

 PRTG saves time

PRTG saves time

PRTG automatically generates the optimal IP address sensors for your environment. In contrast to many other IP monitoring tools your monitoring will be set up and ready to go in no time at all. 92% of our customers report improved IT system reliability - thus saving them time and trouble.

 PRTG saves you effort

PRTG saves you effort

Monitor your IP addresses comfortably, around the clock. And enjoy the design of an intuitive web interface. The built-in alert feature is quick to react - leaving no room for system trouble or failure.

 PRTG saves money

PRTG saves money

80% of our customers report substantial or even exceptional network management cost savings. Our customers report that their PRTG licenses have paid for themselves in an average of a few weeks.

Your IP Monitoring at a glance

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!


200,000 system administrators worldwide
trust our software. Every day.

We have compiled some reviews for you.



  • 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

IP Monitoring
This is how you scan your traffic with PRTG!

 The starting position

The starting position

As an administrator, you want to keep a close eye on your traffic. And for good reason: one single IP address can use up so much bandwidth that this can ultimately have negative consequences on your entire network. Thanks to PRTG, you will prevent traffic problems over the long term and optimize the performance of your network.

The overview

The overview

How much traffic runs via your network in all? The SNMP Traffic Sensor provides you with a summary of the total amount of traffic which comes in and goes out. Does the Christmas season put added pressure on your online store? Or perhaps marketing campaigns and major updates? With IP Monitoring by PRTG, you can identify weekly, monthly, and seasonal fluctuations. You'll see how traffic develops over longer periods of time, and can promptly take measures to accommodate scenarios such as continual growth.

 Fine-tune your monitoring 

Fine-tune your monitoring

Your next step is to have a look in greater detail. Via Packet Sniffing, with NetFlow sensors for Cisco devices, or with other flow technologies like sFlow or jFlow, you’ll be able to analyze your traffic more precisely and fine-tune your IP monitoring. The dashboard displays the amount of mail traffic, web traffic, VoIP, file transfers, chat protocols, and much more. Where does such data come from? Who is the recipient? Which protocols are used? This fine-tuning lets you identify bandwidth hogs - whether they be individual users or certain applications or computers together.

PRTG: The swiss army knife for sys admins

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
  • New REST API Sensor: Monitor almost everything that provides XML or JSON

Looking for an alternative to Nagios? Switch to PRTG!



Many users of open source solutions such as Nagios are in search of alternatives to their IP or network monitoring. It is true that the basic versions of open source software are free. But with PRTG, implementation and maintenance are significantly more straightforward, such as can be seen with the configuration of the customizable alarm and notification system. You'll therefore save time and worry - and in the long run, a lot of money. These costs should be taken into consideration when comparing the various tools available.



Open source solutions depend on the support of their communities - and that is a good thing. But when it comes to major problems, administrators need quick and reliable answers so issues can be clearly identified and resolved. Such assistance is provided by the PAESSLER Support Team. Our support team usually answers inquiries within 24 hours. The answers to many questions can already be found in our knowledge base. In addition, numerous videos and web seminars are at your disposal.



One of our greatest priorities is to make our monitoring software intuitive and easy to use. As an administrator, your job should be as stress-free as possible. The user-friendliness of PRTG has been repeatedly proven in countless consumer tests. For more information, read our comparison of Nagios and PRTG here.


Practical tip: “Hey Gerald, what would you tell administrators looking to implement their IP monitoring with PRTG?

„Those wishing to set up IP monitoring should be ready to go in depth. Our SNMP sensors provide for a quick overview. But our Packet Sniffing and Netflow sensors ensure users get a closer look. Only then is it possible to optimize one’s network on a continual basis.”

Gerald Schoch works as a technical editor at PAESSLER AG.


Also interesting:


PRTG monitors the quality of your VoIP-connections. By preventing malfunctions and verifying service level agreements, you’ll save time and money. Read more about IP SLA Monitoring here.

VPN Monitoring: PRTG monitors VPN connections and measures traffic, load, and the number of users. Identify connection problems and suspicious traffic.

Network Security Monitoring: PRTG monitors your firewalls, ports, servers, and much more. Prompt alerts allow you to quickly identify irregularities in your network and maintain the security of your network.


German quality

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


Made in Germany: The PRTG Network Monitoring Tool is the fruit of an engaged team. The company was founded by Dirk Paessler. The Paessler AG headquarters are located in the city of Nuremberg, in the heart of Germany. We combine typical German virtues such as high quality standards, industriousness, and commitment with international, cosmopolitan flair. Read more about our firm here. By the way: We are regularly looking for new recruits.

Case Studies: Airports, utility companies, banks, colleges, hospitals: PRTG is present in every industry. For each of our customers, business and organizational processes depend on the proper functioning of the network infrastructure. The PRTG customer satisfaction is close to 100%. Read in our case studies how our customers use PRTG.

Product tests: It goes without saying that we are convinced by the quality of PRTG. But what about the others? PRTG has always performed extremely well in tests. PRTG user “LanLine” sums it up best: “PRTG was already good several years ago, and has gotten better from version to version ever since.” Such has been our steadfast and sincere goal. Read more about monitoring software product tests and comparisons here.

Support: Our support team works hard every day to help customers solve their monitoring problems. Our goal is to resolve all inquiries within 24 hours (on business days). We've drafted a comprehensive manual and built up an extensive knowledge base featuring videos, webinars, and FAQs. All support, of course, is also included!

Getting started is easy: The trial version is free, which means you can try our monitoring tool risk-free. To switch to another version of PRTG, simply search for an appropriate license. You can upgrade any time you like.


IPv6 Cheat Sheet

You want to know everything about IPv6?

You probably have been working with IPv4 for years. But what about IPv6? In our cheat sheet you get all the details about the IPv6 header, the correct address allocation, typical ICMPv6 error messages and much more.

Get your free copy of our IPv6 cheat sheet now.


Network Monitoring Software - Version (October 10th, 2019)


Download for Windows and hosted version available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


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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