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: 897

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-897 A Fall Branch TN FLBRTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-897 0 Fall Branch TN FLBRTNXARS0  4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-897 1 Fall Branch TN JHCYTNXC9MD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 956   2006-10-01   
423-897 2 Fall Branch TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2018-06-09   
423-897 3 Fall Branch TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2018-09-20   
423-897 4 Fall Branch TN JHCYTNXCXAY  073H TELNYX LLC 956   2021-01-23   
423-897 5 Fall Branch TN JHCYTNXCX2Y  8645 SUNCOM DBA T-MOBILE USA 956   2022-08-26   
423-897 6 Fall Branch TN JHCYTNXCXRX  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 956   2021-02-15   
423-897 7 Fall Branch TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2021-10-23   
423-897 8 Fall Branch TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-06   
423-897 9 Fall Branch TN JHCYTNXCXPX  525E ONVOY, LLC - TN 956   2019-06-06   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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