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: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-777 A Allentown NJ CMDNNJCE56Z  145J TERRA NOVA TELECOM INC. 222      
640-777 0 Allentown NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2019-08-16   
640-777 1 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-09-18   
640-777 2 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-09-18   
640-777 3 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-09-18   
640-777 4 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-09-18   
640-777 5 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-03-29   
640-777 6 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-03-29   
640-777 7 Allentown NJ   145J TERRA NOVA TELECOM INC. 222   2019-05-26   
640-777 8 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-03-29   
640-777 9 Allentown NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2020-03-29   

Last updated: Sat, 04 Jul 2026 13:07:56 UTC

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