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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NPA: 401 [Rate centres in NPA 401] [Dial plan for NPA 401]

NXX: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
401-677 A Hope Valley RI EPRVRIELCM2  6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 130      
401-677 7 Hope Valley RI EPRVRINB6MD  145J TERRA NOVA TELECOM INC. 130   2020-11-14   
401-677 9 Hope Valley RI EPRVRIELCM2  6889 OMNIPOINT MIAMI E LICENSE, LLC DBA T-MOBILE USA 130      

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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