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: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-233 A Downers Grove IL CHCGILCNHMD  073H TELNYX LLC 358      
331-233 0 Downers Grove IL CHCGILCNHMD  073H TELNYX LLC 358      
331-233 1 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-233 2 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-233 3 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-233 4 Downers Grove IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-233 5 Downers Grove IL   829J PAETEC ITEL, LLC 358      
331-233 6 Downers Grove IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358      
331-233 7 Downers Grove IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
331-233 8 Downers Grove IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
331-233 9 Downers Grove IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

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

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