how to view a list of spam numbers in galaxy s3?

Ok, I knew how to make a number become spam number in Samsung galaxy s3. That is simple, just tap on that number and click "Add to spam numbers". But,

how to view a list of spam numbers in galaxy s3?

At this moment, the only way i can do is to check each number one by one by tap on that number and if it appears "Remove from spam numbers" then we know that number is spam.