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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
423-662 8 Blountville TN   525E ONVOY, LLC - TN 956   2021-02-17   
423-662 9 Blountville TN   525E ONVOY, LLC - TN 956   2022-09-29   
423-663 A Huntsville TN HNVITNXARS0  0565 HIGHLAND TEL. COOP, INC. 474      
423-663 0 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 1 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 2 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 3 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 4 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 5 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 6 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 7 Huntsville TN   6278 UNITED STATES CELLULAR - TN 474      
423-663 8 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-663 9 Huntsville TN   0565 HIGHLAND TEL. COOP, INC. 474      
423-664 A Chattanooga TN CHTGTN78DS0  2757 CENTURYLINK COMMUNICATIONS LLC - TN 472      
423-664 0 Chattanooga TN   2757 CENTURYLINK COMMUNICATIONS LLC - TN 472      
423-664 1 Chattanooga TN   2757 CENTURYLINK COMMUNICATIONS LLC - TN 472      
423-664 2 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-06-11   
423-664 3 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-06-11   
423-664 4 Chattanooga TN   2757 CENTURYLINK COMMUNICATIONS LLC - TN 472      
423-664 5 Chattanooga TN   2757 CENTURYLINK COMMUNICATIONS LLC - TN 472      
423-664 6 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2013-08-03   
423-664 7 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2013-08-03   
423-664 8 Chattanooga TN   124F BANDWIDTH.COM CLEC, LLC - TN 472      
423-664 9 Chattanooga TN   2757 CENTURYLINK COMMUNICATIONS LLC - TN 472      
423-665 A Charleston TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-665 0 Charleston TN   516C AT&T CORP. 472   2010-03-24   
423-665 1 Charleston TN   829J PAETEC ITEL, LLC 472   2005-03-12   
423-665 2 Charleston TN   7473 POWERTEL ATLANTA LICENSES, INC. 472   2025-10-20   
423-665 3 Charleston TN   792K CHARTER IP ENABLED SERVICES, LLC 472   2006-06-03   
423-665 4 Charleston TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2004-12-20   
423-665 5 Charleston TN   7473 POWERTEL ATLANTA LICENSES, INC. 472   2025-09-18   
423-665 6 Charleston TN   7473 POWERTEL ATLANTA LICENSES, INC. 472   2025-10-03   
423-665 7 Charleston TN   7473 POWERTEL ATLANTA LICENSES, INC. 472   2025-12-15   
423-665 8 Charleston TN   7473 POWERTEL ATLANTA LICENSES, INC. 472   2025-12-23   
423-665 9 Charleston TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2008-11-28   
423-666 A Elizabethton TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-666 0 Elizabethton TN   525E ONVOY, LLC - TN 956   2019-07-10   
423-666 1 Elizabethton TN   525E ONVOY, LLC - TN 956   2019-07-10   
423-666 2 Elizabethton TN   073H TELNYX LLC 956   2021-01-23   
423-666 3 Elizabethton TN   525E ONVOY, LLC - TN 956   2023-02-10   
423-666 4 Elizabethton TN   624H ONVOY SPECTRUM, LLC 956   2023-04-27   
423-666 5 Elizabethton TN   525E ONVOY, LLC - TN 956   2021-07-10   
423-666 6 Elizabethton TN   525E ONVOY, LLC - TN 956   2018-06-16   
423-666 7 Elizabethton TN   525E ONVOY, LLC - TN 956   2019-06-23   
423-666 8 Elizabethton TN   525E ONVOY, LLC - TN 956   2018-06-16   
423-666 9 Elizabethton TN   525E ONVOY, LLC - TN 956   2019-07-10   
423-667 A Chattanooga TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472      
423-668 A Chattanooga TN CHTGTNNSDS1  9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-668 0 Chattanooga TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2012-10-20   
423-668 1 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2023-12-14   
423-668 2 Chattanooga TN   9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-668 3 Chattanooga TN   9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-668 4 Chattanooga TN   9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-668 5 Chattanooga TN   9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-668 6 Chattanooga TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2012-10-20   
423-668 7 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2023-12-14   
423-668 8 Chattanooga TN   318J COMCAST IP PHONE, LLC 472   2012-12-21   
423-668 9 Chattanooga TN   9419 BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 472      
423-669 A Benton TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472      
423-669 2 Benton TN   525E ONVOY, LLC - TN 472   2023-10-14   
423-669 9 Benton TN   145J TERRA NOVA TELECOM INC. 472   2025-11-22   
423-670 A Johnson City TN JHCYTNXCXJY  515J IP HORIZON LLC 956      
423-670 0 Johnson City TN   124F BANDWIDTH.COM CLEC, LLC - TN 956   2023-03-11   
423-670 1 Johnson City TN   515J IP HORIZON LLC 956   2020-11-14   
423-670 2 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-05-17   
423-670 3 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-05-17   
423-670 4 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-05-17   
423-670 5 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-05-17   
423-670 6 Johnson City TN   525E ONVOY, LLC - TN 956   2021-01-06   
423-670 7 Johnson City TN   525E ONVOY, LLC - TN 956   2021-01-06   
423-670 8 Johnson City TN   525E ONVOY, LLC - TN 956   2023-02-26   
423-670 9 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-12-18   
423-671 A Chattanooga TN CHTGTNNSXSZ  515J IP HORIZON LLC 472      
423-671 0 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2025-03-07   
423-671 1 Chattanooga TN   515J IP HORIZON LLC 472   2020-11-20   
423-671 2 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2025-09-19   
423-671 3 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2025-09-19   
423-671 4 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2025-09-19   
423-671 5 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2025-09-19   
423-671 6 Chattanooga TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472   2021-09-19   
423-671 7 Chattanooga TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2022-09-23   
423-671 8 Chattanooga TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2024-10-04   
423-671 9 Chattanooga TN   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2024-12-24   
423-672 A Johnson City TN JHCYTNXCXAY  073H TELNYX LLC 956      
423-672 0 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2022-12-10   
423-672 1 Johnson City TN   073H TELNYX LLC 956   2020-02-17   
423-672 2 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-05-17   
423-672 3 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-05-17   
423-672 4 Johnson City TN   525E ONVOY, LLC - TN 956   2021-05-22   
423-672 5 Johnson City TN   525E ONVOY, LLC - TN 956   2021-05-22   
423-672 6 Johnson City TN   624H ONVOY SPECTRUM, LLC 956   2021-10-08   
423-672 7 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2022-12-10   
423-672 8 Johnson City TN   8645 SUNCOM DBA T-MOBILE USA 956   2022-02-07   
423-672 9 Johnson City TN   8645 SUNCOM DBA T-MOBILE USA 956   2022-02-07   
423-673 A Johnson City TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956   2024-12-07   
423-673 0 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-12-18   
423-673 1 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-12-18   
423-673 2 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-12-18   
423-673 3 Johnson City TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-12-18   
423-673 4 Johnson City TN   829J PAETEC ITEL, LLC 956   2021-05-28   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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