Local Calling Guide

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

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-275 A Towson MD WHMRMDATPS0  107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238      
443-275 0 Towson MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2013-01-19   
443-275 1 Towson MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2006-09-11   
443-275 2 Towson MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-08-13   
443-275 3 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-275 4 Towson MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
443-275 5 Towson MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-11-20   
443-275 6 Towson MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2012-10-27   
443-275 7 Towson MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2012-09-26   
443-275 8 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-01-29   
443-275 9 Towson MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-13   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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