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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-528 A Baileyton TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-528 0 Baileyton TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-528 1 Baileyton TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-528 2 Baileyton TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-528 3 Baileyton TN JHCYTNXCX3X  7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 956      
423-528 4 Baileyton TN JHCYTNXCXHY  318J COMCAST IP PHONE, LLC 956      
423-528 5 Baileyton TN JHCYTNXCXRX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956      
423-528 6 Baileyton TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-528 7 Baileyton TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956      
423-528 8 Baileyton TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-528 9 Baileyton TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.