A communication terminal (100c) is provided with: an obtaining device (101) for presenting the host name of the another end terminal (100d) to an address resolution server (200), thereby obtaining a second address bundle (221) indicating a network route from a global network (401), to which the address resolution server belongs, to the another end terminal; a recognizing device (102) for recognizing a positional relation on the network between the communication terminal and the another end terminal, on the basis of the second address bundle and a first address bundle (221) indicating a network route from the global network, to which the address resolution server belongs, to the communication terminal; and a determining device (103) for determining a host address which is used for the communication with the another end terminal from among the second address bundle, on the basis of the recognized positional relation.