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: 489

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-489 A Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466      
423-489 0 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2008-06-09   
423-489 1 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2007-08-31   
423-489 2 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2007-03-22   
423-489 3 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2007-02-05   
423-489 4 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2006-10-13   
423-489 5 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2006-08-19   
423-489 6 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2006-04-17   
423-489 7 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2005-06-11   
423-489 8 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2005-06-11   
423-489 9 Cumberland Gap TN CRBNKYMA0MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 466   2004-12-25   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.