Local Calling Guide

Area code/prefix search

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
443-201 A Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-201 0 Westminster MD   082H LOCAL ACCESS LLC - MD 238   2013-09-06   
443-201 1 Westminster MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-05   
443-201 2 Westminster MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-02-27   
443-201 3 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2014-10-01   
443-201 4 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-08-31   
443-201 5 Westminster MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-04-02   
443-201 6 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2012-09-01   
443-201 7 Westminster MD   912D BROADVOX-CLEC, LLC - MD 238   2012-10-08   
443-201 8 Westminster MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2013-11-13   
443-201 9 Westminster MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-09-04   

Last updated: Sat, 29 Jun 2019 02:32:58 UTC

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