The following regulations must be followed while registering a .US domain name:
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The Name Server restrictions are as follows:
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It is mandatory to mention at least 2 Name Servers during Registration.
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These Name Servers' IP Address should be registered in the United States of America (USA).
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While providing Contact details for .US domain names, you would be asked to specify the Nexus Information, which pertains to:
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Application Purpose: Whether the domain name being registered is for Business use (Profit/Non-profit), Personal use, etc.
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Nexus Category: Whether the person registering the domain name is a resident/citizen of the United States of America, or the domain name is registered for an organization based in the United States of America, or having an office or facility therein.
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The following words/phrases, or combination of any of these seven words/phrases are not allowed in any .US domain name:
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shit
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piss
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fuck
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cunt
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cocksucker
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motherfucker
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tits
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Domain names satisfying the following categories are reserved:
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All domains of any length beginning with 18XX or 1-8XX or 8XX, where X is any number from 0 to 9 (both 0 and 9 being inclusive).
Example:
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1800abc.us
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812abc-def.us
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1-805-999-9999.us
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All domains beginning with NXX or 1NXX or 1-NXX followed by exactly seven numbers not including hyphens, where N is any number from 2 to 9 (both 2 and 9 being inclusive) and X is any number from 0 to 9 (both 0 and 9 being inclusive).
Example:
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12-999-9999.us
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19009998888.us
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1-212---1-2-3-4-5-6-7--.us
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All domains beginning with XXXXX, where X is any number from 0 to 9 (both 0 and 9 being inclusive).
Example:
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20176.us
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90210-Melrose.us
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Note
Furthermore, some other .US domain names have been reserved by the .US Registry.
Additional InformationReserved Names List (available under Registrar Resources on the far right)
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