Geographic location system and method

摘要

A method for determining a derived geographic location of a target Internet host includes identifying plural landmark Internet hosts communicatively coupled with the target Internet host by a network. The method also includes measuring network latencies of probe packets transmitted to the target and landmark Internet hosts along different network pathways and calculating relative distances between the target Internet host and one or more of the landmark Internet hosts based on the network latencies. The method further includes comparing the relative distances to identify at least one of the landmark Internet hosts that is geographically closer to the target Internet host than one or more other landmark Internet hosts and determining the derived geographic location of the target Internet host based on a geographic location of the at least one of the landmark Internet hosts that is geographically closer to the target Internet host.