Facebook send me a confirmation code on my mobile number but indeed i didn't ask for it , how can I know for who is this code
There are high chances that someone used your mobile number to receive a confirmation code from Facebook. It could be a mistake or someone was trying to access your account. You can report the occurrence to Facebook or just ignore the code.
If you know anyone in your house or any friends who have this number, that could be who sent the code.
U can't, there are many people those days with conformation code security so it would be impossible to find the person