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: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-576 A Elizabethton TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-576 0 Elizabethton TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-576 1 Elizabethton TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-576 2 Elizabethton TN JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956      
423-576 3 Elizabethton TN   081J SKYBEST COMMUNICATIONS, INC. - TN 956      
423-576 4 Elizabethton TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-576 5 Elizabethton TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-576 6 Elizabethton TN   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-576 8 Elizabethton TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      
423-576 9 Elizabethton TN JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.