Numbers with this prefix were first introduced in 2009.
While 2064456128 was originally issued with the info above, the owner of the phone number (206) 445-6128 may have transferred it through a process called porting.
This number will not stop calling me, even though I am am on the National Do Not Call Registry. Whoever it is says nothing at all; merely hands up when I answer after a 5 second pause.
California