How can I find out who called my cell number using a blocked number?

You can't. If someone is harassing you, report it to your carrier and they will tell you what you can do.

How can I find out who called my cell number using a blocked number?
That's odd because I had called a number and blocked my number and a guy called my phone the next day and wanted to know why I called. He said you know you can find out blocked numbers on the internet.

I don't know what he's talking about, because that's not true. There is no way that I know of for an individual to find out a blocked number. On the other hand, they can press something like *69 (I think it is) which will dial back the last number called, but without revealing the number.

No close but not its *67 then the number! Done it a time or two myself :)

No close but not its *67 then the number!! Done it a time or two myself :)

Thanks, I haven't used it in years. So I wasn't sure of the exact code.

Scott is right, you can't... I've had a harrasser and I even called the police and they said they would need some kind of warrant or maybe it was a supeona(sp) to find out... even your carrier can't tell you anything... the most you can do is if you suspect who it is, you can get their number blocked but that won't stop them from pranking you from someone else's phone!

So basically there is not way to track such? :(

Correct.

It's *67 To block Your number When You call some one.
*69 For the Call back thing.

But at the end of the day, you can not find out who is calling from a blocked number

Z<whatever>
I never said you could call back the blocked number,
But if its unknown not blocked you can call it back.

I don't know about 'blocked' numbers but I know unknown ones. That you can log on to your account page if you have one with your carrier. And then view the history of every incoming and outgoing call. I found out an unknown number that way, however do not know about blocked ones. If you haven't tried this you could give it a try.

People dial *67 before the number their calling for a reason, so it's blocked! Of course you can't find out who it is.Blocked and Unknown are different.