Local Calling Guide

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NPA: 503 [Rate centres in NPA 503] [Dial plan for NPA 503]

NXX: 864

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-864 A Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 0 Dayton OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2017-12-14   
503-864 1 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 2 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 3 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 4 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 5 Dayton OR THDLORXABMD  6010 NEW CINGULAR WIRELESS PCS, LLC 672   2013-06-13   
503-864 6 Dayton OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2007-05-28   
503-864 7 Dayton OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672   2003-02-08   
503-864 8 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      
503-864 9 Dayton OR DYTNORXADS0  4323 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 672      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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