Interexchange carrier (IXC) numbers directly access your long distance carrier lines. IXC numbers begin with 1010. After 1010, IXC numbers include 3 digits, plus the number, including 0, 00, or 1 plus10 digits. These numbers are set up on your default translations.
Remember that the user first dials 9 in this example to access ARS, and then dials the rest of the number, in this example, for an IXC call to AT&T. 1010288 is the carrier access code for AT&T.