Local Calling Guide

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

NXX: 671

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-671 A New Windsor MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-671 0 New Windsor MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
443-671 1 New Windsor MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
443-671 2 New Windsor MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-09-02   
443-671 3 New Windsor MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   
443-671 4 New Windsor MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-31   
443-671 5 New Windsor MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2006-04-07   
443-671 6 New Windsor MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-01-19   
443-671 7 New Windsor MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-18   
443-671 8 New Windsor MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-31   
443-671 9 New Windsor MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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