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: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-406 A Midway (Sullivan) TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956      
423-406 0 Midway (Sullivan) TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956      
423-406 1 Midway (Sullivan) TN   792K CHARTER IP ENABLED SERVICES, LLC 956      
423-406 2 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-406 3 Midway (Sullivan) TN JHCYTNXCX3X  7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 956      
423-406 4 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-406 5 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-406 6 Midway (Sullivan) TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-406 8 Midway (Sullivan) TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-406 9 Midway (Sullivan) 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.