Local Calling Guide

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Search area code/prefix (NPA/NXX)
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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
443-798 A Towson MD LARLMDCC1MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-798 0 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-03-03   
443-798 1 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-03-03   
443-798 2 Towson MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-07-27   
443-798 3 Towson MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-08   
443-798 4 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-16   
443-798 5 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-16   
443-798 6 Towson MD   4773 XO MARYLAND, LLC 238   2005-08-14   
443-798 7 Towson MD   2589 US LEC OF MARYLAND, INC. 238   2007-08-28   
443-798 8 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-03-03   
443-798 9 Towson MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      

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

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