NeuStar, Inc.

The 30 April 2014 disruption of Neustar's UltraDNS service showed why authoritative DNS must be treated as running network infrastructure rather than a static entry in a configuration file. The accountability question is whether the provider, its carriers and its customers could prove that routing, mitigation, secondary service, monitoring and restoration worked at the layers each controlled.

A proxy service could publish its own contact details while keeping a customer’s identity in a confidential file. In .us, that arrangement collided with a federal registry contract interpreted to require the registry to hold and publicly display the actual holder’s data. The litigation clarified how authority travelled from NTIA through NeuStar and accredited registrars, but the appellate court ended the challenge on standing, leaving the constitutional merits unresolved for a registrant who had remained genuinely anonymous.