internet_address_survey_it25w-20090319 (03/19/2009 to 04/18/2009)

To collect this data, an Internet-wide IP address sweep was conducted. Every IP address in the ranges allocated by IANA was pinged once by sending ICMP ECHO_REQUEST (PING) packet. If the response (ICMP_ECHO_REPLY) came, its IP address was recorded in this data-set. In all, over 2.5 billion distinct IP addresses were probed during this experiment.

为采集本数据集，本次实验开展了全域互联网IP地址扫描。针对互联网编号分配机构（Internet Assigned Numbers Authority, IANA）分配的全部IP地址段内的每一个IP地址，均通过发送互联网控制报文协议（Internet Control Message Protocol, ICMP）ECHO_REQUEST（即PING）数据包执行一次PING操作。若接收到对应的ICMP_ECHO_REPLY响应，则将该IP地址记录入本数据集。本次实验中共探测了超过25亿个不同的IP地址。