Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 515 [Rate centres in NPA 515] [Dial plan for NPA 515]

NXX: 379

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
515-379 A Livermore IA LVMRIACORS3  9631 QWEST CORPORATION 632      
515-379 0 Livermore IA   6266 UNITED STATES CELLULAR - IA 632   2010-02-01   
515-379 1 Livermore IA   9631 QWEST CORPORATION 632      
515-379 2 Livermore IA   9631 QWEST CORPORATION 632      
515-379 3 Livermore IA   221F ONVOY, LLC - IA 632   2012-12-14   
515-379 4 Livermore IA   221F ONVOY, LLC - IA 632   2012-12-14   
515-379 5 Livermore IA   985E BANDWIDTH.COM CLEC, LLC - IA 632   2015-02-19   
515-379 6 Livermore IA   221F ONVOY, LLC - IA 632   2016-04-05   
515-379 7 Livermore IA   221F ONVOY, LLC - IA 632   2008-08-29   
515-379 8 Livermore IA   221F ONVOY, LLC - IA 632   2016-04-05   
515-379 9 Livermore IA   221F ONVOY, LLC - IA 632   2013-01-24   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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