45001 - 45365 ........................Essen  ü
45401 - 45481 ........................Mülheim/ Ruhr 
45501 - 45529 ........................Hattingen
45536 - 45549 ........................Sprockhövel
45601 - 45665 ........................Recklinghausenü
45669 - 45701 ........................Herten
45702 - 45711 ........................Datteln
45712 - 45721 ........................Haltern am See
45722 - 45721 ........................Waltrop
45732 - 45739 ........................Oer-Erkenschwick
45741 - 45772 ........................Marl
45801 - 45900 ........................Gelsenkirchen