DEVICE FOR COLLECTING COMMUNICATION DESTINATION CORRESPONDENCE RELATION, METHOD FOR COLLECTING COMMUNICATION DESTINATION CORRESPONDENCE RELATION, AND PROGRAM FOR COLLECTING COMMUNICATION DESTINATION CORRESPONDENCE RELATION

摘要

A device (100) for collecting communication destination correspondence relations has: a communication destination designation unit (101) that designates a target communication destination that serves as the target of correspondence relation collection; a DNS query transmission control unit (102) that controls a DNS client such that a DNS query is transmitted to the target communication destination in a cycle that is shorter than or the same as the cycle at which the IP address corresponding to the target communication destination is modified, and, from the response to the DNS query, collects the IP address corresponding to the target communication destination; and a correspondence relation history information construction unit (103) that constructs history information from at least one of: the IP address corresponding to the target communication destination collected by the DNS query transmission control unit (102); and the time, or the date and time, that the response to the DNS query was carried out.