Registry Services

For over a decade, Neustar has demonstrated its proficiency as a trusted, authoritative provider of essential registry services. Today, our customers enjoy reliable, fair and secure access and connectivity to their data.
Neustar maintains a deep and diverse collection of essential directories for top-level domains and all U.S. Common Short Codes (CSCs).

Domain Name Registry Services

Neustar operates the authoritative registries of Internet domain names for the .biz, .us, .tel and .travel top-level domains. We also provide international registry gateways for China’s .cn and Taiwan’s .tw country-code top-level domains. All Internet communications routing to any of these domains must query a copy of our directory to ensure that the communication is routed to the appropriate destination.

U.S. Common Short Codes

Neustar operates the authoritative Common Short Codes registry on behalf of the U.S. wireless industry. CSCs are the five- and six-digit number strings used for all U.S. Common Short Codes – part of the short messaging service upon which the U.S. wireless industry relies.