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: 670

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-670 A Woodbury NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2026-02-07   
856-670 0 Woodbury NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2026-02-07   
856-670 1 Woodbury NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2026-05-21   
856-670 9 Woodbury NJ CMDNNJCEXRY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 222   2026-06-08   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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