internet_address_census_it36c-20101005 (10/05/2010 to 11/06/2010)

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，研究团队实施了一次全域互联网IP地址扫描行动。针对互联网编号分配机构（Internet Assigned Numbers Authority，IANA）分配的地址段内的所有IP地址，均通过发送ICMP回显请求（ICMP ECHO_REQUEST，即PING）数据包完成一次ping探测。若该IP地址返回了ICMP回显应答（ICMP_ECHO_REPLY），则将其记录至本数据集中。本次实验累计探测了超过25亿个唯一IP地址。