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: 850

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-850 A Jonesboro TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956      
423-850 0 Jonesboro TN   525E ONVOY, LLC - TN 956   2019-06-06   
423-850 1 Jonesboro TN   525E ONVOY, LLC - TN 956   2019-06-06   
423-850 2 Jonesboro TN   939H COMMIO, LLC 956   2022-12-11   
423-850 3 Jonesboro TN   318J COMCAST IP PHONE, LLC 956   2021-01-29   
423-850 4 Jonesboro TN   4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2021-08-13   
423-850 5 Jonesboro TN   525E ONVOY, LLC - TN 956   2021-10-23   
423-850 6 Jonesboro TN   114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956   2019-08-12   
423-850 7 Jonesboro TN   525E ONVOY, LLC - TN 956   2023-08-11   
423-850 8 Jonesboro TN   525E ONVOY, LLC - TN 956   2018-06-20   
423-850 9 Jonesboro TN   073H TELNYX LLC 956   2021-01-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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