Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 335

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-335 A Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-07-04   
331-335 0 Geneva IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-08-20   
331-335 1 Geneva IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2024-08-20   
331-335 2 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-11-17   
331-335 3 Geneva IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2026-03-11   
331-335 4 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-11-17   
331-335 5 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-11-17   
331-335 6 Geneva IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2024-09-28   
331-335 7 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-07-25   
331-335 8 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-07-25   
331-335 9 Geneva IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2024-07-04   

Last updated: Sat, 02 May 2026 12:20:53 UTC

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