Local Calling Guide

Area code/prefix search

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

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-312 A Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-01-07   
331-312 0 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-01-07   
331-312 1 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-01-07   
331-312 2 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-09-17   
331-312 3 Aurora IL CHCGILCPXPX  732J NUSO, LLC 358   2024-01-08   
331-312 4 Aurora IL CHCGILWUXMD  490J DISH WIRELESS, LLC 358   2024-06-24   
331-312 5 Aurora IL CHCGILWUXMD  490J DISH WIRELESS, LLC 358   2024-08-22   
331-312 6 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-12-19   
331-312 7 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-09-23   
331-312 8 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-09-23   
331-312 9 Aurora IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-09-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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