internet_address_census_it72j-20161003 (10/03/2016 to 11/03/2016)

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，本次实验开展了全球互联网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，均发送一次ICMP回声请求（ICMP ECHO_REQUEST，即PING）数据包进行探测。若接收到对应的ICMP回声应答（ICMP_ECHO_REPLY），则将该IP地址记入本数据集。本次实验累计探测了超过25亿个唯一IP地址。