This number is used by a wide variety of phone phishers and anyone who "spoofs" the true originating number can use this number. You will notice many other people getting calls from this obvious illegitimate number, recently a company called me to tell me my Microsoft computer was talking to him and telling him there was a problem. First of all, it is aimed at people that know little about computers, and it is a numbers game. Sooner or later they will get someone to believe it is legitimate. After all, aren't most technical support specialists working in an Indian call center? OK maybe not but I found the best thing to do was to either say they you have no computer or say you use an Apple. I got this on my land-line and took my cell and asked him just a second, pushed a button to make the tone noise and then said after 5 seconds, OK, I am recording this please continue. They never called me back.