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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: JHCYTNXCX2Y

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-948 6 Limestone TN 8645 SUNCOM DBA T-MOBILE USA 956   2011-06-23   
423-948 8 Limestone TN 8645 SUNCOM DBA T-MOBILE USA 956   2005-01-15   
423-948 9 Limestone TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-957 A Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-957 0 Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-957 1 Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-957 2 Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956   2006-04-23   
423-957 3 Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956   2007-04-29   
423-957 6 Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-957 9 Hampton TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-963 A Kingsport TN 5562 METROPCS, INC. 956      
423-963 1 Kingsport TN 5562 METROPCS, INC. 956      
423-963 2 Kingsport TN 5562 METROPCS, INC. 956   2006-06-22   
423-963 3 Kingsport TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-963 4 Kingsport TN 5562 METROPCS, INC. 956      
423-963 5 Kingsport TN 5562 METROPCS, INC. 956      
423-963 6 Kingsport TN 5562 METROPCS, INC. 956      
423-963 7 Kingsport TN 5562 METROPCS, INC. 956   2006-10-08   
423-963 8 Kingsport TN 5562 METROPCS, INC. 956      
423-963 9 Kingsport TN 5562 METROPCS, INC. 956      
423-967 A Kingsport TN 5562 METROPCS, INC. 956      
423-967 0 Kingsport TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-967 1 Kingsport TN 5562 METROPCS, INC. 956      
423-967 2 Kingsport TN 5562 METROPCS, INC. 956      
423-967 3 Kingsport TN 5562 METROPCS, INC. 956      
423-967 4 Kingsport TN 5562 METROPCS, INC. 956      
423-967 5 Kingsport TN 5562 METROPCS, INC. 956      
423-967 6 Kingsport TN 5562 METROPCS, INC. 956      
423-967 7 Kingsport TN 5562 METROPCS, INC. 956      
423-967 8 Kingsport TN 5562 METROPCS, INC. 956      
423-967 9 Kingsport TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-972 A Greeneville TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-972 0 Greeneville TN 8645 SUNCOM DBA T-MOBILE USA 956      
423-972 6 Greeneville TN 8645 SUNCOM DBA T-MOBILE USA 956   2006-06-22   
423-972 9 Greeneville TN 8645 SUNCOM DBA T-MOBILE USA 956      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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