Just blocked them with my android s4....very easy just go to the # press menu an select add to reject list...might add 646 later...I am sure it works with the 3 also....most telemarketing dolts only ring my phone once and then get blocked (the rest block their number...Some unknown get blocked too)
Got a call from this number and didn't answer it. No message. Called back with my caller ID disabled and got a message from Verizon saying their customer was unreachable at this time.