The B Root Domain Name Server (DNS) is operated the University of Southern California by the Internet and Networked Systems Division at the Information Sciences Institute working with USC’s Information Technology Services.
B Root provides root DNS service at 18.104.22.168 (IPv4) and 2001:500:84::b (IPv6), operating as b.root-servers.net.
B Root is operated as a public service to the Internet. As a research university, we also support research.
USC/ISI has provided root DNS service since the inception of the DNS in 1987 (more history).
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