Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 723

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-723 A Kingsport TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-723 0 Kingsport TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-723 1 Kingsport TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-723 2 Kingsport TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-723 3 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956   2006-11-15   
423-723 4 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956   2006-12-06   
423-723 5 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956   2007-01-19   
423-723 6 Kingsport TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-723 7 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956   2007-01-19   
423-723 8 Kingsport TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2012-03-24   
423-723 9 Kingsport TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2007-05-26   

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

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