Find someone by their phone number for free

Hello,

People who call randomly deserve to be blocked without us trying to find out who they are.

Others, when they have been raised properly, are supposed to introduce themselves when they call or leave a message, otherwise it's back to the first situation.

I recently received a call from a completely unknown number that I picked up for some reason, and they asked who I was; I told them that it was rather the opposite that was appropriate, to which they did not comply: hung up and blocked.