A network assembly and associated method for assigning an identification code to an electronic file includes a reference repository, an indexing unit linked with the reference repository, and an editing unit linked with the reference repository and the indexing unit. The reference repository receives the electronic file from a communications network, such as the Internet, and stores characteristic information associated with the electronic file. The indexing unit assigns and stores an identification code with respect to the characteristic information. The editing unit inserts the identification code to the electronic file in a format suitable for the electronic file. The network assembly further includes a review unit linked with the editing unit for reviewing the inserted identification code before dispatching the electronic file from the network assembly.