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: 830

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-830 A Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-830 0 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-01-11   
423-830 1 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-01-11   
423-830 2 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-10-23   
423-830 3 Kingsport TN JHCYTNXCX3X  7278 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 956   2019-02-14   
423-830 4 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-07-10   
423-830 5 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-07-10   
423-830 6 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-08-11   
423-830 7 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2023-08-11   
423-830 8 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2018-06-16   
423-830 9 Kingsport TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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