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: 329

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-329 A Aurora IL   224C ONVOY, LLC 358   2025-03-01   
331-329 0 Aurora IL   224C ONVOY, LLC 358   2025-03-01   
331-329 1 Aurora IL   224C ONVOY, LLC 358   2025-03-01   
331-329 2 Aurora IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2025-03-03   
331-329 3 Aurora IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2025-03-03   
331-329 4 Aurora IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2025-03-03   
331-329 5 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-03   
331-329 6 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-03   
331-329 7 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-03   
331-329 8 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-03   
331-329 9 Aurora IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2025-03-03   

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

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