DB Netz AG is a 100%-owned subsidiary of Deutsche Bahn is a railway infrastructure provider, which owns and operates a majority of the Germanrailway system (2005: 34,211 km). The company was established in the course of the second stage of the German rail reform as a subsidiary of Deutsche Bahn. DB Netz’s headquarters are in Frankfurt and it has seven regional divisions ("Regionalbereiche", RB). The locations of its regional headquarters are Berlin (RB east), Frankfurt (RB central), Duisburg (RB west), Hanover (RB north), Karlsruhe (RB southwest), Leipzig (RB southeast) and Munich (RB south).
In Dec 2007, it was superseded by DB Netze when DB reorganised into 3 departments covering passengers, logistics and infrastructure.