Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-390 A Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 0 Kingsport TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-390 1 Kingsport TN   792K CHARTER IP ENABLED SERVICES, LLC 956      
423-390 2 Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 3 Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 4 Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 5 Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 6 Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 7 Kingsport TN KGPTTNXADS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-390 8 Kingsport TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      
423-390 9 Kingsport TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956      

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

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