ISMN data access (free)

Data can be viewed when clicking on the button: Data access. 

User registration is not necessary for viewing the data. The data viewer embeds Open Street Map, an open-source and freely available service, which offers the user a map-based selection tool to view and download the available data. More information about Data viewer can be found in section Tools

Login / registration (free) is mandatory for data download, therefore please find further information under Data download.