internet_outage_adaptive_a31c-20180101 (01/01/2018 to 04/01/2018)

To collect this data, all allocated and responsive Internet IP address blocks were pinged by sending ICMP ECHO_REQUEST (PING) packet. The block status was recorded in this data set. Probe was repeated every 11 minutes, and more quickly when uncertain about block status. In all, approximately 3.5M /24 subnets were periodically probed.为构建本数据集，研究人员向所有已分配且可响应的互联网IP地址块发送ICMP ECHO_REQUEST（PING）数据包进行ping探测，并将各地址块的状态记录于数据集内。探测任务每11分钟重复执行一次，当无法确定地址块状态时，会加快探测频次。本次探测累计对约350万个/24子网开展了周期性探测。