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: 475 [Rate centres in NPA 475] [Dial plan for NPA 475]

NXX: 371

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
475-371 A New Canaan CT   490J DISH WIRELESS, LLC 920   2024-07-21   
475-371 0 New Canaan CT   490J DISH WIRELESS, LLC 920   2024-07-21   
475-371 1 New Canaan CT   490J DISH WIRELESS, LLC 920   2024-08-01   

Last updated: Sun, 18 Aug 2024 23:40:19 UTC

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