Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-677 A Williamsport OH CLMDOH44JMD  965H FRACTEL, LLC 324      
220-677 0 Williamsport OH CLMBOH1143Z  624H ONVOY SPECTRUM, LLC 324   2024-08-02   
220-677 3 Williamsport OH CLMDOH44NMD  490J DISH WIRELESS, LLC 324   2023-09-25   
220-677 6 Williamsport OH   145J TERRA NOVA TELECOM INC. 324   2025-07-31   
220-677 7 Williamsport OH CLMDOH44JMD  965H FRACTEL, LLC 324   2021-08-14   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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