My Cart
Toll Free
888.398.4703
International
++1.760.736.3700

Whois .us domain lookup for Whois United States Server - United States Delegation Record for .us Domains

United States Domain - .us Domain Registration

.us Registrar .us Whois

A searchable database maintained by registrars that contain information about networks, networking organizations, domain names, and the contacts associated with them for the .us and ISO 3166 country code top-level domains. Also, the protocol, or set of rules, that describes the application used to access the database. Each registrar implements the Whois protocol and maintains a separate and distinct Whois database for its respective .us domain name registrations.

Delegation Record
For .us United States

Sponsoring Organization

NeuStar, Inc.
Loudoun Tech Center
46000 Center Oak Plaza
Sterling Virginia 20166
United States

Sub Domains

Administrative Contact

Sean Kaine
NeuStar, Inc.
Loudoun Tech Center
46000 Center Oak Plaza
Sterling Virginia 20166
United States
Email: registrytechnical1@neustar.biz
Voice: +1 571 434 5168
Fax: +1 571 434 5401

Technical Contact

Neustar Operations
NeuStar, Inc.
Loudoun Tech Center
46000 Center Oak Plaza
Sterling Virginia 20166
United States
Email: registrytechnical2@neustar.biz
Voice: +1 571 434 5487
Fax: +1 571 434 5401

Name Servers

Host NameIP Address(es)
a.cctld.us 156.154.124.70
b.cctld.us 156.154.125.70
2001:503:d1ae:ffff:ffff:ffff:ffff:ff7e
c.cctld.us 156.154.127.70
e.cctld.us 156.154.126.70
f.cctld.us 209.173.58.70
2001:500:3682:0:0:0:0:11
k.cctld.us 156.154.128.70
2001:503:e239:0:0:0:3:1

Domain Information

Domain Name Services
IANA is responsible for the operation and maintenance of a number of key aspects of the DNS, including the root zone, and the .intand .arpa domains.

The DNS Root Zone IANA is the global coordinator of the DNS root. The root is the upper-most part of the DNS hierarchy, and involves delegating administrative responsibility of “top-level domains”, which are the last segment of a domain name, such as .us. Part of this task includes evaluating requests to change the operators of country code domains, as well as day-to-day maintenance of the details of the existing operators.