Directory of 331 area code prefixes

Prefix Phone Numbers State
331-200 132T-MOBILE USA, INC.
331-220 6SPRINT SPECTRUM L.P.
331-221 4AMERITECH ILLINOIS
331-222 5NEW CINGULAR WIRELESS PCS, LLC - IL
331-223 7NEW CINGULAR WIRELESS PCS, LLC - IL
331-248 17COMCAST PHONE OF ILLINOIS, LLC DBA COMCO - IL
331-262 5SPRINT SPECTRUM L.P.
331-330 14NEW CINGULAR WIRELESS PCS, LLC - IL
331-332 10NEW CINGULAR WIRELESS PCS, LLC - IL
331-333 4NEW CINGULAR WIRELESS PCS, LLC - IL
331-422 13LEVEL 3 COMMUNICATIONS, LLC - IL
331-425 28T-MOBILE USA, INC.
331-431 20BANDWIDTH.COM CLEC, LLC - IL
331-442 5CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-444 6CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-452 3CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-454 5NEW CINGULAR WIRELESS PCS, LLC - IL
331-456 5FIRST COMMUNICATIONS LLC - IL
331-457 5CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-462 7XO ILLINOIS, INC.
331-465 3NEW CINGULAR WIRELESS PCS, LLC - IL
331-472 6T-MOBILE USA, INC.
331-481 9CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-551 4NEW CINGULAR WIRELESS PCS, LLC - IL
331-575 8SPRINT SPECTRUM L.P.
331-588 3NEW CINGULAR WIRELESS PCS, LLC - IL
331-625 6CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-642 10BANDWIDTH.COM CLEC, LLC - IL
331-643 10SPRINT SPECTRUM L.P.
331-645 8SPRINT SPECTRUM L.P.
331-684 16SIGECOM, LLC DBA WOW INTERNET CABLE AND PHONE
331-725 10NEW CINGULAR WIRELESS PCS, LLC - IL
331-777 7CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL
331-826 6SPRINT SPECTRUM L.P.
331-888 24PEERLESS NETWORK OF ILLINOIS, LLC - IL