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: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-657 A Blackwood NJ   637C ONVOY, LLC - NJ 222   2026-04-19   
856-657 0 Blackwood NJ   637C ONVOY, LLC - NJ 222   2026-04-19   
856-657 1 Blackwood NJ   637C ONVOY, LLC - NJ 222   2026-04-19   
856-657 2 Blackwood NJ   637C ONVOY, LLC - NJ 222   2026-04-19   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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