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: 615

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-615 A Collegedale TN CHTGTNNSXRZ  318J COMCAST IP PHONE, LLC 472      
423-615 0 Collegedale TN CHTGTNNSXRZ  318J COMCAST IP PHONE, LLC 472   2007-05-03   
423-615 1 Collegedale TN CHTGTNOXZMD  5562 METROPCS, INC. 472   2014-07-31   
423-615 2 Collegedale TN CHTGTNOXZMD  5562 METROPCS, INC. 472   2014-09-01   
423-615 3 Collegedale TN CHTGTNOXZMD  5562 METROPCS, INC. 472   2016-03-17   
423-615 4 Collegedale TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2019-08-26   
423-615 5 Collegedale TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2021-03-15   
423-615 6 Collegedale TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472   2019-07-26   
423-615 7 Collegedale TN CHTGTNNSX8Z  508J CENTURYLINK COMMUNICATIONS, LLC 472   2014-05-06   
423-615 8 Collegedale TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-02-24   
423-615 9 Collegedale TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2008-11-28   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.