Who called from 2064945600

I receive at least 2 to 3 calls from this number a day. When I call back, it says the no. has been disconnected.  I tried to do an online search and this is the information I received:  Carrier: XO Washington, Inc., location: King, Washington and it is a landline.  Any help if this is some type of scam would be appreciated.  Thanks.

206-494-5600 ... called and talked so fast, couldn't understand her. told her I was driving and asked who she was with and all she says is I call you back and hung up. When I called the # back 5 minutes later it was not in service

I found out that the call from 2064945600 is coming from a call center. One of the companies using this number is Proweaver.net.

CALLED THIS MORNING 2064945600  NO MESSAGE DON'T ANSWER IF I DON'T KNOW WHO IS CALLING.  WHAT A PAIN. HOW DO THEY THIS PHONE NUMBERS?

I got a call from this number earlier. I was on another line so I didn't answer. No message. Showed up as Washington on caller ID. I just called the number and recording said number is not in service. This should be illegal. HMMMM-maybe it is. Duh!!!!!