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: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-579 A Kingsport TN GTCYVA020MD  3185 MOUNTAINET TELEPHONE COMPANY - VA 956      
423-579 0 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2009-12-16   
423-579 1 Kingsport TN GTCYVA020MD  008A MOUNTAINET TELEPHONE COMPANY - TN 956   2009-04-06   
423-579 2 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2009-12-16   
423-579 3 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2010-02-05   
423-579 4 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2010-03-12   
423-579 5 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2010-03-12   
423-579 6 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2010-03-12   
423-579 7 Kingsport TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2011-01-28   
423-579 8 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2010-07-04   
423-579 9 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2010-07-04   

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

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