Numbers with this prefix were first introduced in 2001.While 4087694725 was originally issued with the info above, the owner of the phone number (408) 769-4725 may have transferred it through a process called porting.
Caller type: Unknown
Repeated, almost daily (typically in the morning). Upon answering the caller simply hangs up after a long pause. Seems as if the call is simply a test to see if the line is responded to by human voice.