Local Calling Guide

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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-328 4 Johnson City TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2009-03-26   
423-328 5 Johnson City TN JHCYTNXCXRX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956   2011-06-20   
423-328 6 Johnson City TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2010-03-30   
423-328 7 Johnson City TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956   2010-07-10   
423-328 8 Johnson City TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2011-11-29   
423-328 9 Johnson City TN BUVLTNAX0MD  792K CHARTER IP ENABLED SERVICES, LLC 956   2014-05-12   
423-329 A Greeneville TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 0 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 1 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 2 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 3 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 4 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 5 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 6 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 7 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 8 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-329 9 Greeneville TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-330 A Erwin TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-330 0 Erwin TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2005-08-13   
423-330 1 Erwin TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2010-06-19   
423-330 2 Erwin TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2003-10-25   
423-330 3 Erwin TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2003-10-25   
423-330 4 Erwin TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2007-06-23   
423-330 5 Erwin TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2003-10-25   
423-330 6 Erwin TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956   2008-04-05   
423-330 7 Erwin TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2008-12-12   
423-330 8 Erwin TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-330 9 Erwin TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-331 A Cleveland TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-331 0 Cleveland TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-331 1 Cleveland TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-331 2 Cleveland TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-331 3 Cleveland TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-331 4 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2008-03-02   
423-331 5 Cleveland TN CHTITNCDDS0  4645 ELECTRIC POWER BOARD OF CHATTANOOGA 472   2008-12-29   
423-331 6 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2008-07-18   
423-331 7 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2008-08-08   
423-331 8 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2008-09-05   
423-331 9 Cleveland TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472      
423-332 A Soddy Daisy TN SDDSTNMARS5  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-333 A Athens TN KNVLTNMA96Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474      
423-333 0 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2006-11-16   
423-333 1 Athens TN KNVLTNMA96Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474   2004-02-04   
423-333 2 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2012-12-26   
423-333 3 Athens TN KNVLTNMA96Z  7476 POWERTEL NASHVILLE LICENSES, INC. 474   2005-03-05   
423-333 4 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-01-07   
423-333 5 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-04-07   
423-333 6 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-10-11   
423-333 7 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-09-08   
423-333 8 Athens TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-11-04   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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