Local Calling Guide

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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 238

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-238 A Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-238 0 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2019-01-01   
331-238 1 Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-03-01   
331-238 2 Downers Grove IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2018-05-12   
331-238 3 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2018-11-21   
331-238 4 Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-02-19   
331-238 5 Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-02-19   
331-238 6 Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2018-02-19   
331-238 7 Downers Grove IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-02-26   
331-238 8 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2020-06-15   
331-238 9 Downers Grove IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2018-03-11   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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