A PIC or CIC code is a 4-digit prefix that identifies a long distance carrier in North America or the Caribbean to a LEC. The LEC uses the code to properly route the call.
Many PIC and CIC codes can be manually dialed before placing a long distance call by dialing 101 followed by the PIC/CIC code. This forces your call to be carried by that PIC/CIC code's carrier instead of your normal long distance carrier.
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MCI Communications Services, Inc. (wholly owned sub. of Verizon Business Global LLC)