This number is from a company called Peerless - if you go to their website they provide a place for you to add you number and request that they do not call. I have entered my number there, it stops the calls for a few days then they call back from a different number. Very annoying - never leaves a message and hangs up when you answer.
Missed call they left no msg
This # called my mobile, left no message. Has same first six digits as my mobile.