Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 640 [Rate centres in NPA 640] [Dial plan for NPA 640]

NXX: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-240 A Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222      
640-240 0 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 1 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 2 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 3 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 4 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 5 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 6 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 7 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 8 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   
640-240 9 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2023-02-04   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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