Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 640 [Rate centres in NPA 640] [Dial plan for NPA 640]

NXX: 291

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-291 A Mount Holly NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2025-09-26   
640-291 0 Mount Holly NJ   6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222   2025-10-10   
640-291 9 Mount Holly NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2025-09-26   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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