internet_address_survey_it18w-20070914 (09/14/2007 to 10/31/2007)

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.

为构建本数据集，研究人员开展了一次全域互联网IP地址扫描行动。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，均发送一次ICMP回声请求（ICMP ECHO_REQUEST，即PING）报文完成探测。若收到对应的ICMP回声回复（ICMP_ECHO_REPLY）响应，则将该IP地址记录至本数据集。本次实验总计探测了超过25亿个唯一IP地址。