Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 856 [Rate centres in NPA 856] [Dial plan for NPA 856]

NXX: 621

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-621 A Salem NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-03-02   
856-621 0 Salem NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-03-08   
856-621 9 Salem NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2024-03-02   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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