I've gotten two messages in the past month of the form "Hi, is this <my real name>?" from unknown numbers. There's a chance they're real acquaintances, but the

I've gotten two messages in the past month of the form "Hi, is this <my real name>?" from unknown numbers. There's a chance they're real acquaintances, but the likelihood of them just being spam finding my name & number in some online database is too high that I haven't responded. If they were real acquaintances, I guess they would tell me who they are, right? Dunno, feels weird.