Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Sheridan, WY

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-763 7 CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2010-10-08   
307-763 8 CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2011-06-03   
307-763 9 CHYNWYMAXIX  6566 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY 654   2012-09-07   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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