internet_address_survey_reprobing_it62g-20141210 (12/10/2014 to 12/19/2014)

To collect this data, a subset of Internet IP addresses was pinged by sending ICMP ECHO_REQUEST (PING) packet. The response (if it ever came within 11 minutes time interval) was recorded in this data set. Probe was repeated every 11 minutes. In all, 40500 netblocks (/24 subnets) were periodically reprobed.

为构建本数据集，研究人员通过发送ICMP ECHO_REQUEST（PING）数据包，对部分互联网IP地址执行ping探测操作。若响应能在11分钟的时限内返回，则将其收录至本数据集。该探测每11分钟重复执行一次。总计对40500个网络块（netblocks，即/24子网）实施了周期性重探测。