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]

NXX: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-303 A Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 0 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-07-03   
423-303 1 Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 2 Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 3 Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 4 Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 5 Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 6 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-04-15   
423-303 7 Cleveland TN CHTGTNKF0MD  8356 US LEC OF TENNESSEE, INC. 472      
423-303 8 Cleveland TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472   2006-04-17   
423-303 9 Cleveland TN CHTGTN12X5Y  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 472   2006-06-11   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.