How to check to see who called me on iphone? (the number is blocked)?

Okay someone called me and I didn't answer because I wasn't by my phone. I looked in the call list and it said it was blocked. But the thig is I don't remember blocking anyone number? How can I check to see who it was.

No, it means they blocked their number so you won't be able to see who it is. Call someone but add a *69 and then their number and your number will show up blocked.

I do think that someone has the choice to make their own number come out as private, so when they call you can't see their number. But I'm not sure.

Youre a bit confused, your phone is not telling you that a number that you had blocked from calling you is calling. What its telling you is that the person calling you has a private number or they intentionally blocked it for thhat call. There's no way of obtaining the number otherwise it would be pointless to have a private number.

Perssonally I wouldnt worry about it, if it was important theyll surely call you back or at least have left a message so you know who it is.