Who called from 4087434473

408-743-4473, left no message
I called number and it is non working number.  Telemarketer?

408-743-4473 has been calling me daily, no message. unable to return call. must be telemarketer.

Same problem, get calls at work, I answer them, but nobody says anything - Caller ID says it's from Sunnyvale, CA

Same problem here. Constantly getting calls from this number and when I call back, it's says the area code is not valid. Caller id also says it's Sunnyvale CA.

Calling daily - How can I make them stop
I answer nobody on the other line