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: 481

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-481 A Roan Mountain TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-481 0 Roan Mountain TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-481 1 Roan Mountain TN   792K CHARTER IP ENABLED SERVICES, LLC 956      
423-481 2 Roan Mountain TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-481 3 Roan Mountain TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-481 4 Roan Mountain TN JHCYTNXCXRX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956      
423-481 5 Roan Mountain TN JHCYTNXCXAY  073H TELNYX LLC 956      
423-481 6 Roan Mountain TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-481 7 Roan Mountain TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-481 8 Roan Mountain TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-481 9 Roan Mountain TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.