Prospective registrants in the .us TLD must fall in one of three U.S.  Nexus categories and must certify that they have a "bona fide presence  in the United States." Prospective registrants must indicate their use  of the domain by selecting one of the following categories: Note: By  agreeing to the policies of the registry, registrants agree to having  one of the requirements below. Nothing further is required to prove the  registrant has a legitimate registration.

Nexus Category 1
A  natural person (i) who is a United States citizen, (ii) a permanent  resident of the United States of America or any of its possessions or  territories, or (iii) whose primary place of domicile is in the United  States of America or any of its possessions.

Nexus Category 2
An  United States entity or organization that is (i) incorporated within  one of the fifty (50) U.S. states, the District of Columbia, or any of  the United States possessions or territories or organized, or otherwise  constituted under the laws of a state of the United States of America,  the District of Columbia or any of its possessions or (including a  federal, state, or local government of the United States, or a political  subdivision thereof, and unincorporated organizations based in the  United States).

Nexus Category 3
An entity or organization  (including a federal, state, or local government of the United States,  or a political subdivision thereof) that has a bona fide presence in the  United States of America or any of its possessions or territories.

If foreign entity, Applicant must state country of citizenship.
Check  from category list, basis for compliance with Nexus requirement -  regularly sells goods in the United States; regularly provides services  in the United States; regularly engages in business activities, trade or  other business (commercial or non-commercial including not-for-profit)  relations in the United States;
Maintains an office or other property within the United States.

The  registry operator conducts weekly random checks for US nexus  requirements. They select a small sample (approximately 0.5% of new  registrations) and send the selected registrants a Nexus confirmation  email. To review the text of this email click here.

Each selected  registrant will have 30 days to respond to the registry operator. If  the registrant fails to respond, the registry operator will attempt a  second contact with the registrant. If there is no response to the  second contact, the registry operator will delete the domain name. The  registry operator is not refunding registration fees for deleted names.