Some spam has been found here:
http://800notes.com/Phone.aspx/1-404-602-9516#p727916120103117618

From Wikipedia:

".us is the Internet country code top-level domain (ccTLD) for the United States and was established in 1985. Registrants of .us domains must be United States citizens, residents, or organizations, or a foreign entity with a presence in the United States. "


From whois.com:

Registrant ID:                               CR151516628
Registrant Name:                             abdullah khamoor
Registrant Organization:                     Khamur Technologies
Registrant Address1:                         1st Floor, MCP Arcade, Rajbhavan Road
Registrant City:                             Hyderabad
Registrant State/Province:                   Andhra Pradesh
Registrant Postal Code:                      500069
Registrant Country:                          India
Registrant Country Code:                     IN
Registrant Phone Number:                     +91.04069996060

Yet another of those Indian based computer "service" firms:
www.homecomputersecurity.us