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: 258

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-258 A Lawrenceville NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-04-19   
640-258 0 Lawrenceville NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-04-19   
640-258 1 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 2 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 3 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 4 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 5 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 6 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 7 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 8 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   
640-258 9 Lawrenceville NJ CMDNNJCEXQY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-05-04   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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