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: 758

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-758 A Bristol TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956   2024-12-07   
423-758 0 Bristol TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-03-06   
423-758 1 Bristol TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956      
423-758 2 Bristol TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956      
423-758 3 Bristol TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956      
423-758 4 Bristol TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2017-10-21   
423-758 5 Bristol TN JHCYTNXCYZZ  829J PAETEC ITEL, LLC 956      
423-758 6 Bristol TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2011-04-14   
423-758 7 Bristol TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2011-10-25   
423-758 8 Bristol TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2012-04-09   
423-758 9 Bristol TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2017-07-14   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.