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: 238

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-238 A Burlington NJ TRENNJTECMD  732J NUSO, LLC 222      
640-238 0 Burlington NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2023-10-21   
640-238 1 Burlington NJ TRENNJTECMD  732J NUSO, LLC 222   2023-01-13   
640-238 8 Burlington NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-02-26   
640-238 9 Burlington NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-02-26   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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