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: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 841

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-841 A Mountain City TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-841 0 Mountain City TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-09-09   
423-841 2 Mountain City TN JHCYTNXCXSY  490J DISH WIRELESS, LLC 956   2024-04-19   
423-841 3 Mountain City TN JHCYTNXCXSY  490J DISH WIRELESS, LLC 956   2024-01-21   
423-841 8 Mountain City TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2023-09-08   
423-841 9 Mountain City TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2023-05-21   

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

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