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: 313

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-313 A Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-313 0 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-313 1 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-313 2 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-313 3 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-313 4 Naperville IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358      
331-313 5 Naperville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-313 6 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-313 7 Naperville IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-313 8 Naperville IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-313 9 Naperville IL CHCGIL24DS6  224C ONVOY, LLC 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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