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: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-437 A La Follette TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-437 0 La Follette TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-437 1 La Follette TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2007-08-06   
423-437 2 La Follette TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2008-10-04   
423-437 3 La Follette TN KNVLTNMA51Z  284E YMAX COMMUNICATIONS CORP. - TN 474   2008-06-21   
423-437 4 La Follette TN KNVLTNMA51Z  284E YMAX COMMUNICATIONS CORP. - TN 474   2008-06-21   
423-437 5 La Follette TN KNVLTNMA51Z  284E YMAX COMMUNICATIONS CORP. - TN 474   2008-06-21   
423-437 6 La Follette TN KNVLTNMA51Z  284E YMAX COMMUNICATIONS CORP. - TN 474   2008-06-21   
423-437 7 La Follette TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474   2009-02-05   
423-437 8 La Follette TN KNVLTNMAYHX  318J COMCAST IP PHONE, LLC 474   2011-08-18   
423-437 9 La Follette TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474   2021-12-02   

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

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