i too got. nobody knew why they are calling and what purpose they are calling. sometimes we may answer unknown calls also because we don't know whether it is fake call or not?
I got a call today (3rd Feb 2016) morning at 9:15a.m and when I accidentally checked this no. in website, many have got a call from this number..... really its strange...how do they get our numbers and what they are going to do...
It is a computer with random number calling software checking to see if a number is "live", has an answering machine or is inactive. Be prepared for nuisance calls!