Broadband measurement

Developed by zafaco GmbH on behalf of the German Federal Network Agency (Bundesnetzagentur), the broadband measurement tool ( has been in operation since 2015 to test and assess the performance of stationary and mobile Internet access services.

With the help of the broadband measurement of the Federal Network Agency, end customers can quickly and simply see the speed of their Internet access and thus define the efficiency of their stationary and/or mobile broadband connection.

Browser-based version

A test can be carried out irrespective of the service provider or the technology used and for free at

Mobile version 

For mobile connections, the app Breitbandmessung/Funkloch (mobile coverage dead spot) is available free of charge. 

The app can be downloaded for Android in the Google Store and for iOS in the Apple Store.

Determining dead spots in network coverage and the availability of networks

Since 30.10.2018, the mobile app version of the broadband measurement tool (Breitbandmessung/Funkloch; network coverage dead spot) has been available for use to record network availability. This additional functionality enables users to document whether they are within a 2G, 3G or 4G area or whether mobile network coverage is unavailable (dead spot). It is planned to publish the aggregated measurement points in the form of a map.



A desktop app has been available since 02.05.2018 that allows users to check the contractually agreed download data transfer rates of fixed networks.

The desktop version of the broadband measurement app measures broadband throughput speeds and allows users to check the contractually agreed download data transfer rates of their fixed network. The test results can be used to help resolve disputes with the provider.

With the aid of the desktop app, a minimum number of scheduled single measurements are carried out as a measurement campaign.

The desktop app is made available in line with Art. 4 Paragraph 4 Regulation (R) (EU) 2015/2120 of the European Parliament and the Notification 485/2017 issued by the Federal Network Agency (Bundesnetzagentur) regarding the appropriation and the specifications as proof of the unspecified legal concepts “significant and continuous or regularly recurring difference in the speed.”


Measurement report:

Provision of tariff information

As part of the broadband measurement, zafaco has set up a reporting portal that allows telecommunications providers to provide details about their tariffs and the data transfer rates of their products.

The tariff information provided by the telecommunications providers is used amongst other things so that end customers do not have to manually enter each and every relevant tariff information required to measure the data transfer rate. The tariff information of the respective provider is stored in a regularly updated database, so the end customer is able to select quality assurance criteria within the framework of a broadband measurement based on specific tariff features (provider, contractually agreed maximum data transfer rate during downloads, name of the tariff).

Yearly reports and interactive presentation of results

The results of broadband measurements throughout the whole of Germany are published in the form of yearly reports. You can download these reports from the website under the menu item “Yearly reports”.

The data analysis concept is also explained in the yearly reports. This includes explanations of sampling procedure and individual validation steps.

A multi-level validation process verifies the reported measurement data and end customer information. Data records that do not meet the respective validation criterion are rejected during this process. 

Furthermore, the results of the yearly reports are available as an interactive presentation. The user can see the results in graphics and tables after selecting different filter criteria and graphing options. A separate chart makes it possible to compare yearly data across individual years of broadband measurements. The retrievable graphics provide, in some cases, more information than what is presented within the scope of the yearly reports.

Map representation


A browser-based map display mode ( is provided in addition to the results contained in the yearly reports. Validated results are broken down and depicted according to region and certain criteria, such as provider and/or broadband categories, for example. Depending on the zoom level, the measurement results are depicted either as NUTS 3 regions or, if the resolution is higher, in differently-sized grids. The user is also able to define the time period of the depicted measurements for display and also download the aggregated measurement results used in the map representation.