internet_address_history_it68w-20160121 (02/22/2013 to 02/22/2016)

This dataset, generated on 2016-03-22, contains all IPv4 addresses who ever responded to our ISI-west (w) censuses, starting from census it11w (internet_address_survey_it11w-20060307), e.g. it11w, it12w, ... Each IP address is given a history of replies (as a bit-string with 's representing ICMP_ECHO_REPLY received from this IP, and 's corresponding to no-replies. We also include numerical scores that are intended to reflect the likelihood that the given IP address will repond in the future. The scores are based on census data from it53w to it68w.

本数据集生成于2016年3月22日，收录了所有曾响应过我们ISI-west（简称w）普查的IPv4地址，普查序列始于it11w（internet_address_survey_it11w-20060307），涵盖it11w、it12w等多轮普查。每个IP地址均附带其响应历史记录，以位字符串（bit-string）形式存储，其中字符`s`代表从该IP接收到ICMP_ECHO_REPLY（因特网控制消息协议回显应答），字符`n`则代表未收到应答。我们还提供了数值评分，用于反映给定IP地址在未来响应普查的可能性，该评分基于it53w至it68w的普查数据生成。