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: 393

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-393 A Bulls Gap TN   792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
423-393 1 Bulls Gap TN   792K CHARTER IP ENABLED SERVICES, LLC 474      
423-393 2 Bulls Gap TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-393 3 Bulls Gap TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474      
423-393 4 Bulls Gap TN KNVLTNMAYHX  318J COMCAST IP PHONE, LLC 474      
423-393 5 Bulls Gap TN KNVLTNMA84Z  516C AT&T CORP. 474      
423-393 6 Bulls Gap TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474      
423-393 7 Bulls Gap TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474      
423-393 8 Bulls Gap TN KNVLTNMA56Z  124F BANDWIDTH.COM CLEC, LLC - TN 474      
423-393 9 Bulls Gap TN KNVLTNMA49Z  525E ONVOY, LLC - TN 474      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.