Local Calling Guide

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

NXX: 275

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-275 A Towson MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-275 0 Towson MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2013-01-19   
443-275 1 Towson MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-09-11   
443-275 2 Towson MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-08-13   
443-275 3 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-275 4 Towson MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
443-275 5 Towson MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-11-20   
443-275 6 Towson MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2012-10-27   
443-275 7 Towson MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2012-09-26   
443-275 8 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-01-29   
443-275 9 Towson MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-13   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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