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: 273

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-273 A Hammonton NJ   637C ONVOY, LLC - NJ 220   2025-05-09   
640-273 0 Hammonton NJ   637C ONVOY, LLC - NJ 220   2025-05-09   
640-273 1 Hammonton NJ   732J NUSO, LLC 220   2025-05-12   

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

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