Jing Qiao

Source Address Classification - Clustering

My previous post "Source Address Classification - Feature Engineering" introduced the background of the source address classification problem and a critical part of the work - »

Source Address Classification - Feature Engineering

Problem background As we operate the authoritative name servers for the .nz ccTLD (Country Code Top Level Domain), we observe more than 500k unique source addresses »

.nz DNS traffic: Trend and Anomalies

As we run the .nz ccTLD (Country Code Top Level Domain) authoritative nameservers, we receive lots of DNS queries and answer each query with a DNS »

Resolver centricity experiment

The Domain Name System is a distributed database with a hierarchical structure. A complete DNS resolution is a time-consuming process composed of iterations of network communications »

Characterization of popular resolvers from .nz authoritative name servers' point of view

As part of our role as .nz registry, we manage 4 out of 7 of the .nz authoritative name servers. We receive hundreds of millions of »

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