internet_outage_adaptive_a30w-20171006 (10/06/2017 to 01/01/2018)

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，研究人员通过发送ICMP回声请求（ICMP ECHO_REQUEST，即PING）数据包，对所有已分配且可响应的互联网IP地址块执行ping探测。本次探测所获取的IP块状态均被记录于本数据集内。探测任务每11分钟重复执行一次，当对该IP块的状态存在不确定性时，会加快探测频率。总计约350万个/24子网被周期性探测。