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: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-637 A Blackwood NJ CMDNNJCE83Z  829J PAETEC ITEL, LLC 222   2025-05-14   
856-637 0 Blackwood NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2025-10-12   
856-637 1 Blackwood NJ   145J TERRA NOVA TELECOM INC. 222   2024-12-28   
856-637 2 Blackwood NJ CMDNNJCE83Z  829J PAETEC ITEL, LLC 222      
856-637 3 Blackwood NJ CMDNNJCE83Z  829J PAETEC ITEL, LLC 222      
856-637 4 Blackwood NJ CMDNNJCE83Z  829J PAETEC ITEL, LLC 222   2017-12-04   
856-637 5 Blackwood NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222   2022-01-15   
856-637 6 Blackwood NJ   482F CORETEL NEW JERSEY, INC. - NJ 222   2019-06-06   
856-637 7 Blackwood NJ   482F CORETEL NEW JERSEY, INC. - NJ 222   2019-05-31   
856-637 8 Blackwood NJ   482F CORETEL NEW JERSEY, INC. - NJ 222   2019-05-31   
856-637 9 Blackwood NJ CMDNNJCE51Z  624H ONVOY SPECTRUM, LLC 222   2022-01-15   

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

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