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
443-821 A Westminster MD HNVAMDAYCM2  6664 SPRINT SPECTRUM L.P. 238      
443-821 0 Westminster MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-821 1 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-10-11   
443-821 2 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-10-27   
443-821 3 Westminster MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2010-12-10   
443-821 4 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-02-03   
443-821 5 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-02-03   
443-821 6 Westminster MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-09-27   
443-821 7 Westminster MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-821 8 Westminster MD   6664 SPRINT SPECTRUM L.P. 238   2010-09-06   
443-821 9 Westminster MD   6664 SPRINT SPECTRUM L.P. 238   2010-09-06   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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