An information-processing apparatus which is capable of transmitting device identifiers of devices connected with LANs to terminals without using a broadcast command is provided. A server is connected with a World Area Network. A managing terminal and printers are connected with a LAN. The server receives a device identifier of the printer connected with any one of the LANs. The server receives an inquiry for a device identifier from a terminal connected with any one of the LANs. The server stores appended information, which is appended to the device identifier while the device identifier is transferred to the server, in a manner that the appended information is associated with the device identifier. The server transmits to the terminal the device identifier whose appended information as stored in a storage coincides with the appended information that is appended to the inquiry while the inquiry is transferred to the server. The managing terminal can obtain the device identifier of the printer connected with the same LAN as the managing terminal itself by transmitting the inquiry to the server.