Someone from this number called my cell phone on 5/13/09 at 11:10am PT. I did not answer it, it went to VM, and whoever it was did not leave a message. When I tried to return the call, I got a phone company message that the number was invalid.
I have a feeling this is some sort of telemarketer, judging by the pattern in the number. I recommend that everyone make sure that their phone numbers are registered with donotcall.gov.
Received a call from 571-990-9990 a few moments ago and the recording was in Spanish. I don't have a clue as to who this is especially since my number is on the Do Not Call list.