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: 526

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-526 A New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 0 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 1 New Tazewell TN KNVLTNJHGT0  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 474      
423-526 2 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 3 New Tazewell TN KNVLTNJHGT0  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 474      
423-526 4 New Tazewell TN KNVLTNIIAMD  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 474      
423-526 5 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 6 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 7 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 8 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      
423-526 9 New Tazewell TN NWTZTNXADS1  0557 CENTURYTEL OF CLAIRBORNE DBA CENTURYLINK-CLAIBORNE 474      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.