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Overview
The .US top-level domain (usTLD) was established in 1985 as the official country code top-level domain (ccTLD) for the United States. It is administered by Neustar. The expanded second-level .US domain launched on April 24, 2002, enabling companies, nonprofits, government entities and individuals to establish unique, memorable American addresses online.

Structure
The existing .US structure is a locality-based hierarchy modeled on the geography of the United States. Most usTLD branches in the locality space are overseen by delegated managers (also known as "delegees" or "locality delegees"). This existing hierarchical design provides structure, name uniqueness and a geographic reference point for registrants. Neustar maintains and enhances this locality-based structure even as it administers the expanded second-level .US domain.

Please contact us with questions at (1-888) 415-0365, or via email at support.us@Neustar.us.
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