Same here.  Is showing up as 'San Francisco/North Bay Area' - I am in Canada, no reason to be receiving calls from there - ALSO i believe this location has been put in place as a caller ID ... caller id is not auto replaced with a location.  Could be a means to track call center activity or to make it seem that you are in a location you are not.

RECEIVE A CALL FROM THAT NUMBER  BUT AFTER 6 SECONDS IT STOPPED BY ITSELF.

Received a call, no message left. nothing comes back as a reverse lookup.