Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 539

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-539 A Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-04-06   
667-539 0 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-05-02   
667-539 1 Baltimore MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2026-05-02   
667-539 5 Baltimore MD   490J BOOST SUBSCRIBERCO L.L.C. 238   2026-06-14   
667-539 6 Baltimore MD   490J BOOST SUBSCRIBERCO L.L.C. 238   2026-07-28   
667-539 9 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-04-06   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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