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.

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

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-817 5 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2008-04-14   
423-817 6 Kingsport TN JHCYTNXCX8Y  939H COMMIO, LLC 956   2022-10-23   
423-817 7 Kingsport TN JHCYTNXCXPY  624H ONVOY SPECTRUM, LLC 956   2023-04-27   
423-817 8 Kingsport TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2008-06-06   
423-817 9 Kingsport TN JHCYTNXCX2Y  5562 METROPCS, INC. 956   2007-07-31   
423-818 A Jellico TN KNVNTNECDMD  276F PEERLESS NETWORK OF TENNESSEE, LLC - TN 474      
423-818 0 Jellico TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2016-11-12   
423-818 1 Jellico TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2018-03-31   
423-818 3 Jellico TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474   2021-06-19   
423-818 4 Jellico TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2021-10-25   
423-818 5 Jellico TN   145J TERRA NOVA TELECOM INC. 474   2023-12-17   
423-818 6 Jellico TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2021-07-30   
423-818 7 Jellico TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2021-03-04   
423-818 8 Jellico TN KNVNTNEC0MD  073H TELNYX LLC 474   2018-09-21   
423-818 9 Jellico TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2020-12-21   
423-819 A Cleveland TN CHTGTN12X8Y  732J NUSO, LLC 472      
423-819 0 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2023-03-05   
423-819 1 Cleveland TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472   2024-11-22   
423-819 2 Cleveland TN CHTGTNNSXMZ  624H ONVOY SPECTRUM, LLC 472   2023-06-17   
423-819 3 Cleveland TN CHTGTN12X8Y  732J NUSO, LLC 472   2023-08-17   
423-819 4 Cleveland TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-09-09   
423-819 5 Cleveland TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-09-09   
423-819 6 Cleveland TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-09-09   
423-819 7 Cleveland TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2023-03-06   
423-819 8 Cleveland TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2023-03-06   
423-819 9 Cleveland TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2023-03-06   
423-820 A Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-820 0 Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-06   
423-820 1 Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-06   
423-820 2 Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-07-10   
423-820 3 Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-07-10   
423-820 4 Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2022-12-27   
423-820 8 Greeneville TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2018-06-16   
423-820 9 Greeneville TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2023-03-25   
423-821 A Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 A Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 0 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 1 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 2 Chattanooga TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2006-07-10   
423-822 3 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 4 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 5 Chattanooga TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2006-07-10   
423-822 6 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 7 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-822 8 Chattanooga TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2011-05-26   
423-822 9 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-823 A Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-823 0 Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-823 1 Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-823 2 Greeneville TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956      
423-823 3 Greeneville TN JHCYTNXCXRX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956   2013-01-09   
423-823 4 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2014-08-02   
423-823 5 Greeneville TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956   2008-06-27   
423-823 7 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2014-03-20   
423-823 8 Greeneville TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2008-07-21   
423-823 9 Greeneville TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956   2014-01-12   
423-824 A Erwin TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-824 0 Erwin TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2024-10-14   
423-824 2 Erwin TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-10-14   
423-825 A Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 0 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 1 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 2 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 3 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 4 Chattanooga TN CHTITNCDDS0  4645 ELECTRIC POWER BOARD OF CHATTANOOGA 472   2011-10-28   
423-825 5 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 6 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 7 Chattanooga TN CHTGTNSEDS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-825 8 Chattanooga TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2019-06-23   
423-825 9 Chattanooga TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2011-05-26   
423-826 A Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472   2024-12-05   
423-826 0 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 1 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 2 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 3 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 4 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 5 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 6 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 7 Chattanooga TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472      
423-826 8 Chattanooga TN CHTITNCDDS0  4645 ELECTRIC POWER BOARD OF CHATTANOOGA 472   2006-03-31   
423-826 9 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2014-09-22   
423-827 A Chattanooga TN CHTGTNRODS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-827 0 Chattanooga TN CHTGTNRODS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-827 1 Chattanooga TN CHTGTNRODS0  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-827 2 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-09-04   
423-827 3 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2005-04-07   
423-827 4 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2005-04-07   
423-827 5 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2005-04-07   
423-827 6 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2005-04-07   
423-827 7 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2005-09-05   
423-827 8 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-09-04   
423-827 9 Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-09-04   
423-829 A Charleston TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-829 0 Charleston TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-829 1 Charleston TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2014-07-12   
423-829 2 Charleston TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2012-02-26   
423-829 3 Charleston TN CHTGTNNS04Z  829J PAETEC ITEL, LLC 472   2004-09-06   
423-829 4 Charleston TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472   2003-06-01   
423-829 5 Charleston TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      
423-829 6 Charleston TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.