Local Calling Guide

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

NXX: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-343 A Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-343 0 Downers Grove IL CHCGILCNHMD  073H TELNYX LLC 358   2023-03-21   
331-343 1 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-06-13   
331-343 2 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-05-14   
331-343 3 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-03-20   
331-343 4 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-03-20   
331-343 5 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-03-20   
331-343 6 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-06-13   
331-343 7 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-06-13   
331-343 8 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-06-13   
331-343 9 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2023-06-13   

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

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