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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-270 A Trenton NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2025-01-23   
640-270 0 Trenton NJ TRENNJTECMD  732J NUSO, LLC 222   2025-01-24   
640-270 1 Trenton NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2025-01-24   
640-270 7 Trenton NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2025-01-23   
640-270 8 Trenton NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2025-01-23   
640-270 9 Trenton NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2025-01-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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