B-Root Supports ICANN DNS Magnitude Study

USC/ISI’s b.root-servers.net team has started providing DNS Magnitude statistics in late October 2025 as part of an ongoing ICANN study of TLD use.

DNS Magnitude estimates the popularity of a domain using a metric that considers how many unique clients access the domain. ICANN has developed a tool that estimates unique clients in a privacy-preserving way, estimating the number of queriers without sharing actual IP addresses. USC has integrated this tool into our DNS statistics package.

As part of B-Root’s research focus, we hope that participating in this study will help support continued evolution of the Internet’s DNS system.