Local Calling Guide

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

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-231 A Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-231 0 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-11-14   
331-231 1 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-11-14   
331-231 2 Naperville IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-10-29   
331-231 3 Naperville IL CHCGILWUIMD  197D VONAGE AMERICA LLC 358   2018-12-14   
331-231 4 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-11-17   
331-231 5 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2018-08-18   
331-231 6 Naperville IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2017-11-09   
331-231 7 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2018-07-29   
331-231 8 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2018-07-29   
331-231 9 Naperville IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2017-09-28   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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