internet_address_survey_it24w-20090203 (02/03/2009 to 03/04/2009)

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，研究人员开展了一次覆盖全球互联网的IP地址扫描工作。针对互联网编号分配机构（Internet Assigned Numbers Authority, IANA）分配的全部地址段内的每一个IP地址，均通过发送ICMP ECHO_REQUEST（PING）数据包执行一次ping操作。若接收到对应的ICMP_ECHO_REPLY（回显应答）数据包，则将该IP地址记录至本数据集。本次实验中共探测了超过25亿个独立IP地址。