Apparatus and methods consistent with the present invention provide for processing delivery item information in an identification code sorting system by an identification code server. In one embodiment, a primary identification code server receives an identification file containing identification information uniquely corresponding to a delivery item. In this embodiment, the primary identification code server processes the delivery item information and may send the identification file to a secondary identification code server. In another embodiment, a secondary identification code server receives an identification file from a primary identification code server and processes the delivery item information.