Who called from 31471264152

Someone called to our company from this number, asked if we reached the company. When I confirmed she hanged up....
I tried call back, but the number doesn't exists...

Me too. Im in Italy and same way.
the number doesnt exist.
....

They called me at 4:51 am. I didn't make it to pick-up the phone.

I have been called by this number at 07:00 AM in Germany, but nobody has been on the phone.
By a recall I have been informed, that the number do not exist

Same experience with me too. I believe they grab some numbers, before selling the numbers to crooked people/business they check if the number is active or not!