Dataport is the information and communication service provider for public administration in the four federal states of Hamburg, Schleswig-Holstein, Bremen and Saxony-Anhalt as well as for the tax authorities in Mecklenburg-Western Pomerania and Lower Saxony. The institution under public law was founded on the basis of a state treaty on January 1, 2004 and is based in Altenholz near Kiel with branches in Hamburg, Rostock, Bremen, Lüneburg, Magdeburg and Halle.