LIU Shiming,LI Ruixuan,LIU Baojun,et al.Measurement study on the DNS centrality in China[J].Journal on Communications,2024,45(Z2):74-81. DOI: 10.11959/j.issn.1000-436x.2024261.
The Domain Name System (DNS) was initially designed with a distributed architecture to ensure availability. However
with the development of the Internet
the trend of centrality in the DNS has led to a series of potential single points of failure. Focusing on the centrality of China's DNS infrastructure
a passive recursive resolver data collection system based on Internet advertisement distribution was prompted. Combining passive DNS data with active domain authoritative resource record scanning
the authoritative servers for domain names of China and Chinese education were analyzed. The result indicates a high level of centrality
which primarily relies on Internet Service Providers (ISP) and local Internet companies
showing significant differences from the results abroad. Network authorities should strengthen the monitoring and warning mechanisms for centralized nodes in China's DNS infrastructure.
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