internet_address_census_it77e-20170830 (08/30/2017 to 10/03/2017)

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，本次实验开展了全域互联网IP地址扫描工作。针对互联网编号分配机构（IANA）分配的全部地址段内的每一个IP地址，均发送一次网际报文控制协议回显请求（ICMP ECHO_REQUEST，即PING）报文执行PING探测。若收到对应的网际报文控制协议回显应答（ICMP_ECHO_REPLY），则将该IP地址收录至本数据集。本次实验累计探测了超过25亿个独立IP地址。