internet_address_census_it87c-20190911 (2019-09-11 to 2019-10-13)

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全域互联网IP地址扫描行动。向互联网编号分配机构（Internet Assigned Numbers Authority, IANA）分配的所有IP地址段内的每一个IP地址，均发送一则ICMP回声请求（PING）报文以执行ping探测。若该IP地址返回ICMP回声响应（ICMP_ECHO_REPLY），则将其IP地址收录至本数据集。本次实验共计探测超过25亿个独立IP地址。