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: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-304 A Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 0 Atlantic City NJ   637C ONVOY, LLC - NJ 220   2026-10-27   
640-304 3 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 4 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 5 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 6 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 7 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 8 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   
640-304 9 Atlantic City NJ   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 220   2026-10-26   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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