internet_address_survey_it26w-20090527 (05/27/2009 to 06/27/2009)

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.

为构建该数据集，研究人员开展了一次全互联网范围的IP地址扫描行动。所有由互联网编号分配机构（Internet Assigned Numbers Authority, IANA）分配的地址段内的每一个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）数据包进行一次ping探测。若该地址返回了ICMP_ECHO_REPLY响应，则将其IP地址记录入本数据集。本次实验累计探测了超过25亿个不同的IP地址。