Who called from 6265517479

Same old scammer different numbers, no doubt to block them:
626-551-7479
714-463-6060
323-204-7258

another spammer no answer and no message.  calls muliple times.

Received another call again. ANNOYING!!

07/01/14  CID 6265517479 displayed the name QUACH, THANH.  no voice message left
08/01/14  CID  6265517479 displayed the name TIEN, WEI  no voice message left
a search shows an entirely different name. what are they after?

On 7/30 received call from 626-551-7479, displayed name Tien,Wei. Answered but no one on the other end.  What is this?  Why call if no one is talking?  So annoying.