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]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-998 8 Riverside NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2023-08-09   

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Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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