Local Calling Guide

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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 494

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-494 A Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-494 2 Millersville MD   876D ONVOY, LLC - MD 238   2012-10-07   
443-494 3 Millersville MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-494 4 Millersville MD   145J TERRA NOVA TELECOM INC. 238   2025-10-06   
443-494 5 Millersville MD   876D ONVOY, LLC - MD 238   2021-04-02   
443-494 6 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-07-06   
443-494 7 Millersville MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-494 8 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-494 9 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   

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

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