Cingular Codes?

Question

I know there are certain number combinations that allow the cingular network to place your call a diffrent way,
such as dialing #31# which makes your call private, and it is free. Well, at least free with my plan.
Also *31* makes the call unprivate if you have your phone set to only private outgoing calls.

So, what i am asking if anyone knows of any other codes?

Answer 1

This is what you're looking for: http://www.geckobeach.com/cellular/secrets/gsmcodes.php

Answer 2

if u dial *67 then the number it comes up as "restricted" or "ID withheld"

it works for cingular - i have cingular

hope this helps!